diff --git a/src/modules/tm/README b/src/modules/tm/README
index 19f4a9a3781..216533fbfb6 100644
--- a/src/modules/tm/README
+++ b/src/modules/tm/README
@@ -95,53 +95,54 @@ Daniel-Constantin Mierla
               4.9. t_on_branch(branch_route)
               4.10. t_newtran()
               4.11. t_reply(code, reason_phrase)
-              4.12. t_send_reply(code, reason)
-              4.13. t_lookup_request()
-              4.14. t_retransmit_reply()
-              4.15. t_release()
-              4.16. t_forward_nonack([ip, port])
-              4.17. t_forward_nonack_udp(ip, port)
-              4.18. t_forward_nonack_tcp(ip, port)
-              4.19. t_forward_nonack_tls(ip, port)
-              4.20. t_forward_nonack_sctp(ip, port)
-              4.21. t_set_fr(fr_inv_timeout [, fr_timeout])
-              4.22. t_reset_fr()
-              4.23. t_set_max_lifetime(inv_lifetime, noninv_lifetime)
-              4.24. t_reset_max_lifetime()
-              4.25. t_set_retr(retr_t1_interval, retr_t2_interval)
-              4.26. t_reset_retr()
-              4.27. t_set_auto_inv_100(0|1)
-              4.28. t_branch_timeout()
-              4.29. t_branch_replied()
-              4.30. t_any_timeout()
-              4.31. t_any_replied()
-              4.32. t_grep_status("code")
-              4.33. t_is_canceled()
-              4.34. t_is_expired()
-              4.35. t_relay_cancel()
-              4.36. t_lookup_cancel([1])
-              4.37. t_drop_replies([mode])
-              4.38. t_save_lumps()
-              4.39. t_load_contacts([mode])
-              4.40. t_next_contacts()
-              4.41. t_next_contact_flow()
-              4.42. t_check_status(re)
-              4.43. t_check_trans()
-              4.44. t_set_disable_6xx(0|1)
-              4.45. t_set_disable_failover(0|1)
-              4.46. t_set_disable_internal_reply(0|1)
-              4.47. t_replicate([params])
-              4.48. t_relay_to(proxy, flags)
-              4.49. t_set_no_e2e_cancel_reason(0|1)
-              4.50. t_is_set(target)
-              4.51. t_use_uac_headers()
-              4.52. t_is_retr_async_reply()
-              4.53. t_uac_send(method, ruri, nexthop, socket, headers,
+              4.12. t_reply_error()
+              4.13. t_send_reply(code, reason)
+              4.14. t_lookup_request()
+              4.15. t_retransmit_reply()
+              4.16. t_release()
+              4.17. t_forward_nonack([ip, port])
+              4.18. t_forward_nonack_udp(ip, port)
+              4.19. t_forward_nonack_tcp(ip, port)
+              4.20. t_forward_nonack_tls(ip, port)
+              4.21. t_forward_nonack_sctp(ip, port)
+              4.22. t_set_fr(fr_inv_timeout [, fr_timeout])
+              4.23. t_reset_fr()
+              4.24. t_set_max_lifetime(inv_lifetime, noninv_lifetime)
+              4.25. t_reset_max_lifetime()
+              4.26. t_set_retr(retr_t1_interval, retr_t2_interval)
+              4.27. t_reset_retr()
+              4.28. t_set_auto_inv_100(0|1)
+              4.29. t_branch_timeout()
+              4.30. t_branch_replied()
+              4.31. t_any_timeout()
+              4.32. t_any_replied()
+              4.33. t_grep_status("code")
+              4.34. t_is_canceled()
+              4.35. t_is_expired()
+              4.36. t_relay_cancel()
+              4.37. t_lookup_cancel([1])
+              4.38. t_drop_replies([mode])
+              4.39. t_save_lumps()
+              4.40. t_load_contacts([mode])
+              4.41. t_next_contacts()
+              4.42. t_next_contact_flow()
+              4.43. t_check_status(re)
+              4.44. t_check_trans()
+              4.45. t_set_disable_6xx(0|1)
+              4.46. t_set_disable_failover(0|1)
+              4.47. t_set_disable_internal_reply(0|1)
+              4.48. t_replicate([params])
+              4.49. t_relay_to(proxy, flags)
+              4.50. t_set_no_e2e_cancel_reason(0|1)
+              4.51. t_is_set(target)
+              4.52. t_use_uac_headers()
+              4.53. t_is_retr_async_reply()
+              4.54. t_uac_send(method, ruri, nexthop, socket, headers,
                       body)
 
-              4.54. t_get_status_code()
-              4.55. t_clean()
-              4.56. t_exists()
+              4.55. t_get_status_code()
+              4.56. t_clean()
+              4.57. t_exists()
 
         5. RPC Commands
 
@@ -245,50 +246,51 @@ Daniel-Constantin Mierla
    1.61. t_on_branch usage
    1.62. t_newtran usage
    1.63. t_reply usage
-   1.64. t_send_reply usage
-   1.65. t_lookup_request usage
-   1.66. t_retransmit_reply usage
-   1.67. t_release usage
-   1.68. t_forward_nonack usage
-   1.69. t_set_fr usage
-   1.70. t_reset_fr usage
-   1.71. t_set_max_lifetime usage
-   1.72. t_reset_max_lifetime usage
-   1.73. t_set_retr usage
-   1.74. t_reset_retr usage
-   1.75. t_set_auto_inv_100 usage
-   1.76. t_branch_timeout usage
-   1.77. t_branch_replied usage
-   1.78. t_any_timeout usage
-   1.79. t_any_replied usage
-   1.80. t_grep_status usage
-   1.81. t_is_canceled usage
-   1.82. t_is_expired usage
-   1.83. t_relay_cancel usage
-   1.84. t_lookup_cancel usage
-   1.85. t_drop_replies() usage
-   1.86. t_save_lumps() usage
-   1.87. t_load_contacts usage
-   1.88. t_next_contacts usage
-   1.89. t_next_contact_flow usage
-   1.90. t_check_status usage
-   1.91. t_check_trans usage
-   1.92. t_set_disable_6xx usage
-   1.93. t_set_disable_failover usage
-   1.94. t_set_disable_internal_reply usage
-   1.95. t_replicate usage
-   1.96. t_relay_to usage
-   1.97. t_set_no_e2e_cancel_reason usage
-   1.98. t_replicate usage
-   1.99. t_use_uac_headers usage
-   1.100. t_is_retr_async_reply usage
-   1.101. t_uac_send usage
-   1.102. t_get_status_code usage
-   1.103. t_clean usage
-   1.104. t_exists usage
-   1.105. event_route[tm:branch-failure:id] usage
-   1.106. event_route[tm:local-request] usage
-   1.107. event_route[tm:local-response] usage
+   1.64. t_reply_error usage
+   1.65. t_send_reply usage
+   1.66. t_lookup_request usage
+   1.67. t_retransmit_reply usage
+   1.68. t_release usage
+   1.69. t_forward_nonack usage
+   1.70. t_set_fr usage
+   1.71. t_reset_fr usage
+   1.72. t_set_max_lifetime usage
+   1.73. t_reset_max_lifetime usage
+   1.74. t_set_retr usage
+   1.75. t_reset_retr usage
+   1.76. t_set_auto_inv_100 usage
+   1.77. t_branch_timeout usage
+   1.78. t_branch_replied usage
+   1.79. t_any_timeout usage
+   1.80. t_any_replied usage
+   1.81. t_grep_status usage
+   1.82. t_is_canceled usage
+   1.83. t_is_expired usage
+   1.84. t_relay_cancel usage
+   1.85. t_lookup_cancel usage
+   1.86. t_drop_replies() usage
+   1.87. t_save_lumps() usage
+   1.88. t_load_contacts usage
+   1.89. t_next_contacts usage
+   1.90. t_next_contact_flow usage
+   1.91. t_check_status usage
+   1.92. t_check_trans usage
+   1.93. t_set_disable_6xx usage
+   1.94. t_set_disable_failover usage
+   1.95. t_set_disable_internal_reply usage
+   1.96. t_replicate usage
+   1.97. t_relay_to usage
+   1.98. t_set_no_e2e_cancel_reason usage
+   1.99. t_replicate usage
+   1.100. t_use_uac_headers usage
+   1.101. t_is_retr_async_reply usage
+   1.102. t_uac_send usage
+   1.103. t_get_status_code usage
+   1.104. t_clean usage
+   1.105. t_exists usage
+   1.106. event_route[tm:branch-failure:id] usage
+   1.107. event_route[tm:local-request] usage
+   1.108. event_route[tm:local-response] usage
 
 Chapter 1. Admin Guide
 
@@ -366,51 +368,52 @@ Chapter 1. Admin Guide
         4.9. t_on_branch(branch_route)
         4.10. t_newtran()
         4.11. t_reply(code, reason_phrase)
-        4.12. t_send_reply(code, reason)
-        4.13. t_lookup_request()
-        4.14. t_retransmit_reply()
-        4.15. t_release()
-        4.16. t_forward_nonack([ip, port])
-        4.17. t_forward_nonack_udp(ip, port)
-        4.18. t_forward_nonack_tcp(ip, port)
-        4.19. t_forward_nonack_tls(ip, port)
-        4.20. t_forward_nonack_sctp(ip, port)
-        4.21. t_set_fr(fr_inv_timeout [, fr_timeout])
-        4.22. t_reset_fr()
-        4.23. t_set_max_lifetime(inv_lifetime, noninv_lifetime)
-        4.24. t_reset_max_lifetime()
-        4.25. t_set_retr(retr_t1_interval, retr_t2_interval)
-        4.26. t_reset_retr()
-        4.27. t_set_auto_inv_100(0|1)
-        4.28. t_branch_timeout()
-        4.29. t_branch_replied()
-        4.30. t_any_timeout()
-        4.31. t_any_replied()
-        4.32. t_grep_status("code")
-        4.33. t_is_canceled()
-        4.34. t_is_expired()
-        4.35. t_relay_cancel()
-        4.36. t_lookup_cancel([1])
-        4.37. t_drop_replies([mode])
-        4.38. t_save_lumps()
-        4.39. t_load_contacts([mode])
-        4.40. t_next_contacts()
-        4.41. t_next_contact_flow()
-        4.42. t_check_status(re)
-        4.43. t_check_trans()
-        4.44. t_set_disable_6xx(0|1)
-        4.45. t_set_disable_failover(0|1)
-        4.46. t_set_disable_internal_reply(0|1)
-        4.47. t_replicate([params])
-        4.48. t_relay_to(proxy, flags)
-        4.49. t_set_no_e2e_cancel_reason(0|1)
-        4.50. t_is_set(target)
-        4.51. t_use_uac_headers()
-        4.52. t_is_retr_async_reply()
-        4.53. t_uac_send(method, ruri, nexthop, socket, headers, body)
-        4.54. t_get_status_code()
-        4.55. t_clean()
-        4.56. t_exists()
+        4.12. t_reply_error()
+        4.13. t_send_reply(code, reason)
+        4.14. t_lookup_request()
+        4.15. t_retransmit_reply()
+        4.16. t_release()
+        4.17. t_forward_nonack([ip, port])
+        4.18. t_forward_nonack_udp(ip, port)
+        4.19. t_forward_nonack_tcp(ip, port)
+        4.20. t_forward_nonack_tls(ip, port)
+        4.21. t_forward_nonack_sctp(ip, port)
+        4.22. t_set_fr(fr_inv_timeout [, fr_timeout])
+        4.23. t_reset_fr()
+        4.24. t_set_max_lifetime(inv_lifetime, noninv_lifetime)
+        4.25. t_reset_max_lifetime()
+        4.26. t_set_retr(retr_t1_interval, retr_t2_interval)
+        4.27. t_reset_retr()
+        4.28. t_set_auto_inv_100(0|1)
+        4.29. t_branch_timeout()
+        4.30. t_branch_replied()
+        4.31. t_any_timeout()
+        4.32. t_any_replied()
+        4.33. t_grep_status("code")
+        4.34. t_is_canceled()
+        4.35. t_is_expired()
+        4.36. t_relay_cancel()
+        4.37. t_lookup_cancel([1])
+        4.38. t_drop_replies([mode])
+        4.39. t_save_lumps()
+        4.40. t_load_contacts([mode])
+        4.41. t_next_contacts()
+        4.42. t_next_contact_flow()
+        4.43. t_check_status(re)
+        4.44. t_check_trans()
+        4.45. t_set_disable_6xx(0|1)
+        4.46. t_set_disable_failover(0|1)
+        4.47. t_set_disable_internal_reply(0|1)
+        4.48. t_replicate([params])
+        4.49. t_relay_to(proxy, flags)
+        4.50. t_set_no_e2e_cancel_reason(0|1)
+        4.51. t_is_set(target)
+        4.52. t_use_uac_headers()
+        4.53. t_is_retr_async_reply()
+        4.54. t_uac_send(method, ruri, nexthop, socket, headers, body)
+        4.55. t_get_status_code()
+        4.56. t_clean()
+        4.57. t_exists()
 
    5. RPC Commands
 
@@ -1816,51 +1819,52 @@ modparam("tm", "failover_reply_codes", "code=403;code=488;class=5")
    4.9. t_on_branch(branch_route)
    4.10. t_newtran()
    4.11. t_reply(code, reason_phrase)
-   4.12. t_send_reply(code, reason)
-   4.13. t_lookup_request()
-   4.14. t_retransmit_reply()
-   4.15. t_release()
-   4.16. t_forward_nonack([ip, port])
-   4.17. t_forward_nonack_udp(ip, port)
-   4.18. t_forward_nonack_tcp(ip, port)
-   4.19. t_forward_nonack_tls(ip, port)
-   4.20. t_forward_nonack_sctp(ip, port)
-   4.21. t_set_fr(fr_inv_timeout [, fr_timeout])
-   4.22. t_reset_fr()
-   4.23. t_set_max_lifetime(inv_lifetime, noninv_lifetime)
-   4.24. t_reset_max_lifetime()
-   4.25. t_set_retr(retr_t1_interval, retr_t2_interval)
-   4.26. t_reset_retr()
-   4.27. t_set_auto_inv_100(0|1)
-   4.28. t_branch_timeout()
-   4.29. t_branch_replied()
-   4.30. t_any_timeout()
-   4.31. t_any_replied()
-   4.32. t_grep_status("code")
-   4.33. t_is_canceled()
-   4.34. t_is_expired()
-   4.35. t_relay_cancel()
-   4.36. t_lookup_cancel([1])
-   4.37. t_drop_replies([mode])
-   4.38. t_save_lumps()
-   4.39. t_load_contacts([mode])
-   4.40. t_next_contacts()
-   4.41. t_next_contact_flow()
-   4.42. t_check_status(re)
-   4.43. t_check_trans()
-   4.44. t_set_disable_6xx(0|1)
-   4.45. t_set_disable_failover(0|1)
-   4.46. t_set_disable_internal_reply(0|1)
-   4.47. t_replicate([params])
-   4.48. t_relay_to(proxy, flags)
-   4.49. t_set_no_e2e_cancel_reason(0|1)
-   4.50. t_is_set(target)
-   4.51. t_use_uac_headers()
-   4.52. t_is_retr_async_reply()
-   4.53. t_uac_send(method, ruri, nexthop, socket, headers, body)
-   4.54. t_get_status_code()
-   4.55. t_clean()
-   4.56. t_exists()
+   4.12. t_reply_error()
+   4.13. t_send_reply(code, reason)
+   4.14. t_lookup_request()
+   4.15. t_retransmit_reply()
+   4.16. t_release()
+   4.17. t_forward_nonack([ip, port])
+   4.18. t_forward_nonack_udp(ip, port)
+   4.19. t_forward_nonack_tcp(ip, port)
+   4.20. t_forward_nonack_tls(ip, port)
+   4.21. t_forward_nonack_sctp(ip, port)
+   4.22. t_set_fr(fr_inv_timeout [, fr_timeout])
+   4.23. t_reset_fr()
+   4.24. t_set_max_lifetime(inv_lifetime, noninv_lifetime)
+   4.25. t_reset_max_lifetime()
+   4.26. t_set_retr(retr_t1_interval, retr_t2_interval)
+   4.27. t_reset_retr()
+   4.28. t_set_auto_inv_100(0|1)
+   4.29. t_branch_timeout()
+   4.30. t_branch_replied()
+   4.31. t_any_timeout()
+   4.32. t_any_replied()
+   4.33. t_grep_status("code")
+   4.34. t_is_canceled()
+   4.35. t_is_expired()
+   4.36. t_relay_cancel()
+   4.37. t_lookup_cancel([1])
+   4.38. t_drop_replies([mode])
+   4.39. t_save_lumps()
+   4.40. t_load_contacts([mode])
+   4.41. t_next_contacts()
+   4.42. t_next_contact_flow()
+   4.43. t_check_status(re)
+   4.44. t_check_trans()
+   4.45. t_set_disable_6xx(0|1)
+   4.46. t_set_disable_failover(0|1)
+   4.47. t_set_disable_internal_reply(0|1)
+   4.48. t_replicate([params])
+   4.49. t_relay_to(proxy, flags)
+   4.50. t_set_no_e2e_cancel_reason(0|1)
+   4.51. t_is_set(target)
+   4.52. t_use_uac_headers()
+   4.53. t_is_retr_async_reply()
+   4.54. t_uac_send(method, ruri, nexthop, socket, headers, body)
+   4.55. t_get_status_code()
+   4.56. t_clean()
+   4.57. t_exists()
 
 4.1.  t_relay([host, port])
 
@@ -2102,7 +2106,19 @@ if (t_newtran()) {
 t_reply("404", "Not found");
 ...
 
-4.12.  t_send_reply(code, reason)
+4.12.  t_reply_error()
+
+   Sends a stateful reply based in internal error code, similar to
+   sl_send_error() from sl module.
+
+   This function can be used from REQUEST_ROUTE.
+
+   Example 1.64. t_reply_error usage
+...
+t_reply_error();
+...
+
+4.13.  t_send_reply(code, reason)
 
    Creates the transaction if it does not exist (executing internally
    t_newtran()) and sends a stateful reply (executing internally
@@ -2115,12 +2131,12 @@ t_reply("404", "Not found");
      * code - Reply code number.
      * reason - Reason string.
 
-   Example 1.64. t_send_reply usage
+   Example 1.65. t_send_reply usage
 ...
 t_send_reply("404", "Not found");
 ...
 
-4.13.  t_lookup_request()
+4.14.  t_lookup_request()
 
    Checks if a transaction exists. Returns a positive value if so,
    negative otherwise. Most likely you will not want to use it, as a
@@ -2128,33 +2144,33 @@ t_send_reply("404", "Not found");
    none was found. However this is safely (atomically) done using
    t_newtran.
 
-   Example 1.65. t_lookup_request usage
+   Example 1.66. t_lookup_request usage
 ...
 if (t_lookup_request()) {
     ...
 };
 ...
 
-4.14.  t_retransmit_reply()
+4.15.  t_retransmit_reply()
 
    Retransmits a reply sent previously by UAS transaction.
 
-   Example 1.66. t_retransmit_reply usage
+   Example 1.67. t_retransmit_reply usage
 ...
 t_retransmit_reply();
 ...
 
-4.15.  t_release()
+4.16.  t_release()
 
    Remove transaction from memory (it will be first put on a wait timer to
    absorb delayed messages).
 
-   Example 1.67. t_release usage
+   Example 1.68. t_release usage
 ...
 t_release();
 ...
 
-4.16.  t_forward_nonack([ip, port])
+4.17.  t_forward_nonack([ip, port])
 
    Mainly for internal usage -- forward a non-ACK request statefully.
    Variants of this functions can enforce a specific transport protocol.
@@ -2163,28 +2179,28 @@ t_release();
      * ip - IP address where the message should be sent.
      * port - Port number.
 
-   Example 1.68. t_forward_nonack usage
+   Example 1.69. t_forward_nonack usage
 ...
 t_forward_nonack("1.2.3.4", "5060");
 ...
 
-4.17.  t_forward_nonack_udp(ip, port)
+4.18.  t_forward_nonack_udp(ip, port)
 
    See function t_forward_nonack([ip, port]).
 
-4.18.  t_forward_nonack_tcp(ip, port)
+4.19.  t_forward_nonack_tcp(ip, port)
 
    See function t_forward_nonack([ip, port]).
 
-4.19.  t_forward_nonack_tls(ip, port)
+4.20.  t_forward_nonack_tls(ip, port)
 
    See function t_forward_nonack([ip, port]).
 
-4.20.  t_forward_nonack_sctp(ip, port)
+4.21.  t_forward_nonack_sctp(ip, port)
 
    See function t_forward_nonack([ip, port]).
 
-4.21.  t_set_fr(fr_inv_timeout [, fr_timeout])
+4.22.  t_set_fr(fr_inv_timeout [, fr_timeout])
 
    Sets the fr_inv_timeout and optionally fr_timeout for the current
    transaction or for transactions created during the same script
@@ -2202,7 +2218,7 @@ t_forward_nonack("1.2.3.4", "5060");
 
    See also: fr_timer, fr_inv_timer, t_reset_fr().
 
-   Example 1.69. t_set_fr usage
+   Example 1.70. t_set_fr usage
 ...
 route {
         t_set_fr(10000); # set only fr invite timeout to 10s
@@ -2218,7 +2234,7 @@ branch_route[1] {
         }
 }
 
-4.22.  t_reset_fr()
+4.23.  t_reset_fr()
 
    Resets the fr_inv_timer and fr_timer for the current transaction to the
    default values (set using the tm module parameters fr_inv_timer and
@@ -2229,7 +2245,7 @@ branch_route[1] {
 
    See also: fr_timer, fr_inv_timer, t_set_fr.
 
-   Example 1.70. t_reset_fr usage
+   Example 1.71. t_reset_fr usage
 ...
 route {
 ...
@@ -2237,7 +2253,7 @@ route {
 ...
 }
 
-4.23.  t_set_max_lifetime(inv_lifetime, noninv_lifetime)
+4.24.  t_set_max_lifetime(inv_lifetime, noninv_lifetime)
 
    Sets the maximum lifetime for the current INVITE or non-INVITE
    transaction, or for transactions created during the same script
@@ -2255,7 +2271,7 @@ route {
 
    See also: max_inv_lifetime, max_noninv_lifetime, t_reset_max_lifetime.
 
-   Example 1.71. t_set_max_lifetime usage
+   Example 1.72. t_set_max_lifetime usage
 ...
 route {
     if (src_ip=1.2.3.4)
@@ -2266,7 +2282,7 @@ route {
                                           # INVITE and to 15s if not
 }
 
-4.24.  t_reset_max_lifetime()
+4.25.  t_reset_max_lifetime()
 
    Resets the maximum lifetime for the current INVITE or non-INVITE
    transaction to the default value (set using the tm module parameter
@@ -2277,7 +2293,7 @@ route {
 
    See also: max_inv_lifetime, max_noninv_lifetime, t_set_max_lifetime.
 
-   Example 1.72. t_reset_max_lifetime usage
+   Example 1.73. t_reset_max_lifetime usage
 ...
 route {
 ...
@@ -2285,7 +2301,7 @@ route {
 ...
 }
 
-4.25.  t_set_retr(retr_t1_interval, retr_t2_interval)
+4.26.  t_set_retr(retr_t1_interval, retr_t2_interval)
 
    Sets the retr_t1_interval and retr_t2_interval for the current
    transaction or for transactions created during the same script
@@ -2312,7 +2328,7 @@ route {
 
    See also: retr_timer1, retr_timer2, t_reset_retr().
 
-   Example 1.73. t_set_retr usage
+   Example 1.74. t_set_retr usage
 ...
 route {
         t_set_retr(250, 0); # set only T1 to 250 ms
@@ -2328,7 +2344,7 @@ branch_route[1] {
         }
 }
 
-4.26.  t_reset_retr()
+4.27.  t_reset_retr()
 
    Resets the retr_timer1 and retr_timer2 for the current transaction to
    the default values (set using the tm module parameters retr_timer1 and
@@ -2339,7 +2355,7 @@ branch_route[1] {
 
    See also: retr_timer1, retr_timer2, t_set_retr.
 
-   Example 1.74. t_reset_retr usage
+   Example 1.75. t_reset_retr usage
 ...
 route {
 ...
@@ -2347,7 +2363,7 @@ route {
 ...
 }
 
-4.27.  t_set_auto_inv_100(0|1)
+4.28.  t_set_auto_inv_100(0|1)
 
    Switch automatically sending 100 replies to INVITEs on/off on a per
    transaction basis. It overrides the auto_inv_100 value for the current
@@ -2355,7 +2371,7 @@ route {
 
    See also: auto_inv_100.
 
-   Example 1.75. t_set_auto_inv_100 usage
+   Example 1.76. t_set_auto_inv_100 usage
 ...
 route {
 ...
@@ -2364,13 +2380,13 @@ route {
 ...
 }
 
-4.28.  t_branch_timeout()
+4.29.  t_branch_timeout()
 
    Returns true if the failure route is executed for a branch that did
    timeout. It can be used from FAILURE_ROUTE and BRANCH_FAILURE_ROUTE
    event route.
 
-   Example 1.76. t_branch_timeout usage
+   Example 1.77. t_branch_timeout usage
 ...
 failure_route[0]{
         if (t_branch_timeout()){
@@ -2379,14 +2395,14 @@ failure_route[0]{
         }
 }
 
-4.29.  t_branch_replied()
+4.30.  t_branch_replied()
 
    Returns true if the failure route is executed for a branch that did
    receive at least one reply in the past (the "current" reply is not
    taken into account). It can be used from failure_route and
    branch-failure event route.
 
-   Example 1.77. t_branch_replied usage
+   Example 1.78. t_branch_replied usage
 ...
 failure_route[0]{
         if (t_branch_timeout()){
@@ -2398,12 +2414,12 @@ failure_route[0]{
         }
 }
 
-4.30.  t_any_timeout()
+4.31.  t_any_timeout()
 
    Returns true if at least one of the current transactions branches did
    timeout.
 
-   Example 1.78. t_any_timeout usage
+   Example 1.79. t_any_timeout usage
 ...
 failure_route[0]{
         if (!t_branch_timeout()){
@@ -2414,13 +2430,13 @@ failure_route[0]{
         }
 }
 
-4.31.  t_any_replied()
+4.32.  t_any_replied()
 
    Returns true if at least one of the current transactions branches did
    receive some reply in the past. If called from a failure or onreply
    route, the "current" reply is not taken into account.
 
-   Example 1.79. t_any_replied usage
+   Example 1.80. t_any_replied usage
 ...
 onreply_route[0]{
         if (!t_any_replied()){
@@ -2429,12 +2445,12 @@ onreply_route[0]{
         }
 }
 
-4.32.  t_grep_status("code")
+4.33.  t_grep_status("code")
 
    Returns true if "code" is the final reply received (or locally
    generated) in at least one of the current transactions branches.
 
-   Example 1.80. t_grep_status usage
+   Example 1.81. t_grep_status usage
 ...
 onreply_route[0]{
         if (t_grep_status("486")){
@@ -2443,11 +2459,11 @@ onreply_route[0]{
         }
 }
 
-4.33.  t_is_canceled()
+4.34.  t_is_canceled()
 
    Returns true if the current transaction was canceled.
 
-   Example 1.81. t_is_canceled usage
+   Example 1.82. t_is_canceled usage
 ...
 failure_route[0]{
         if (t_is_canceled()){
@@ -2456,12 +2472,12 @@ failure_route[0]{
         }
 }
 
-4.34.  t_is_expired()
+4.35.  t_is_expired()
 
    Returns true if the current transaction has already expired, i.e. the
    max_inv_lifetime/max_noninv_lifetime interval has already elapsed.
 
-   Example 1.82. t_is_expired usage
+   Example 1.83. t_is_expired usage
 ...
 failure_route[0]{
         if (t_is_expired()){
@@ -2470,7 +2486,7 @@ failure_route[0]{
         }
 }
 
-4.35.  t_relay_cancel()
+4.36.  t_relay_cancel()
 
    Forwards the CANCEL if the corresponding INVITE transaction exists. The
    function is supposed to be used at the very beginning of the script,
@@ -2482,7 +2498,7 @@ failure_route[0]{
    CANCELs were successfully sent to the pending branches, true if the
    INVITE was not found, and false in case of any error.
 
-   Example 1.83. t_relay_cancel usage
+   Example 1.84. t_relay_cancel usage
 if (method == CANCEL) {
         if (!t_relay_cancel()) {  # implicit drop if relaying was successful,
                                   # nothing to do
@@ -2495,7 +2511,7 @@ if (method == CANCEL) {
         # do the same as for INVITEs
 }
 
-4.36.  t_lookup_cancel([1])
+4.37.  t_lookup_cancel([1])
 
    Returns true if the corresponding INVITE transaction exists for a
    CANCEL request. The function can be called at the beginning of the
@@ -2509,7 +2525,7 @@ if (method == CANCEL) {
    overwritten with the flags of the INVITE. isflagset() can be used to
    check the flags of the previously forwarded INVITE in this case.
 
-   Example 1.84. t_lookup_cancel usage
+   Example 1.85. t_lookup_cancel usage
 if (method == CANCEL) {
         if (t_lookup_cancel()) {
                 log("INVITE transaction exists");
@@ -2527,7 +2543,7 @@ if (method == CANCEL) {
         # do the same as for INVITEs
 }
 
-4.37.  t_drop_replies([mode])
+4.38.  t_drop_replies([mode])
 
    Drops all the previously received replies in failure_route block to
    make sure that none of them is picked up again.
@@ -2539,7 +2555,7 @@ if (method == CANCEL) {
    Dropping replies works only if a new branch is added to the
    transaction, or it is explicitly replied in the script!
 
-   Example 1.85. t_drop_replies() usage
+   Example 1.86. t_drop_replies() usage
 ...
 failure_route[0]{
         if (t_check_status("5[0-9][0-9]")){
@@ -2555,7 +2571,7 @@ failure_route[0]{
         }
 }
 
-4.38.  t_save_lumps()
+4.39.  t_save_lumps()
 
    Forces the modifications of the processed SIP message to be saved in
    shared memory before t_relay() is called. The new branches which are
@@ -2570,7 +2586,7 @@ failure_route[0]{
    The transaction must be created by t_newtran() before calling
    t_save_lumps().
 
-   Example 1.86. t_save_lumps() usage
+   Example 1.87. t_save_lumps() usage
 route {
         ...
         t_newtran();
@@ -2595,7 +2611,7 @@ failure_route[1] {
         t_relay();
 }
 
-4.39.  t_load_contacts([mode])
+4.40.  t_load_contacts([mode])
 
    This is the first of the three functions that can be used to implement
    serial/parallel forking based on q and +sip.instance values of
@@ -2644,7 +2660,7 @@ failure_route[1] {
 
    This function can be used from REQUEST_ROUTE and FAILURE_ROUTE.
 
-   Example 1.87. t_load_contacts usage
+   Example 1.88. t_load_contacts usage
 ...
 if (!t_load_contacts()) {
         sl_send_reply("500", "Server Internal Error - Cannot load contacts");
@@ -2652,7 +2668,7 @@ if (!t_load_contacts()) {
 };
 ...
 
-4.40.  t_next_contacts()
+4.41.  t_next_contacts()
 
    Function t_next_contacts() is the second of the three functions that
    can be used to implement serial/parallel forking based on the q value
@@ -2685,7 +2701,7 @@ if (!t_load_contacts()) {
    contact_flows_avp are not anymore set. Based on that test, you can then
    use t_set_fr() function to set timers according to your needs.
 
-   Example 1.88. t_next_contacts usage
+   Example 1.89. t_next_contacts usage
 ...
 # First call after t_load_contacts() when transaction does not exist yet
 # and contacts should be available
@@ -2704,7 +2720,7 @@ if (!t_next_contacts()) {
 };
 ...
 
-4.41.  t_next_contact_flow()
+4.42.  t_next_contact_flow()
 
    Function t_next_contact_flow() is the last of the three functions that
    can be used to implement serial/parallel forking based on the q value
@@ -2723,7 +2739,7 @@ if (!t_next_contacts()) {
    syslog). This function can be used from a BRANCH_FAILURE_ROUTE event
    route.
 
-   Example 1.89. t_next_contact_flow usage
+   Example 1.90. t_next_contact_flow usage
 ...
 event_route[tm:branch-failure:outbound]
 {
@@ -2735,7 +2751,7 @@ event_route[tm:branch-failure:outbound]
         }
 ...
 
-4.42.  t_check_status(re)
+4.43.  t_check_status(re)
 
    Returns true if the regular expression “re” match the reply code of the
    response message as follows:
@@ -2746,14 +2762,14 @@ event_route[tm:branch-failure:outbound]
 
    This function can be used from ANY_ROUTE .
 
-   Example 1.90. t_check_status usage
+   Example 1.91. t_check_status usage
 ...
 if (t_check_status("(487)|(408)")) {
     log("487 or 408 negative reply\n");
 }
 ...
 
-4.43.  t_check_trans()
+4.44.  t_check_trans()
 
    t_check_trans() can be used to quickly check if a message belongs or is
    related to a transaction. It behaves differently for different types of
@@ -2800,12 +2816,12 @@ Note
 
    See also: t_lookup_request(), t_lookup_cancel().
 
-   Example 1.91. t_check_trans usage
+   Example 1.92. t_check_trans usage
 if ( method == "CANCEL" && !t_check_trans())
         sl_reply("403", "cancel out of the blue forbidden");
 # note: in this example t_check_trans() can be replaced by t_lookup_cancel()
 
-4.44.  t_set_disable_6xx(0|1)
+4.45.  t_set_disable_6xx(0|1)
 
    Turn off/on 6xx replies special rfc conforming handling on a per
    transaction basis. If turned off (t_set_disable_6xx("1")) 6XXs will be
@@ -2815,7 +2831,7 @@ if ( method == "CANCEL" && !t_check_trans())
 
    See also: disable_6xx_block.
 
-   Example 1.92. t_set_disable_6xx usage
+   Example 1.93. t_set_disable_6xx usage
 ...
 route {
 ...
@@ -2824,13 +2840,13 @@ route {
 ...
 }
 
-4.45.  t_set_disable_failover(0|1)
+4.46.  t_set_disable_failover(0|1)
 
    Turn off/on dns failover on a per transaction basis.
 
    See also: use_dns_failover.
 
-   Example 1.93. t_set_disable_failover usage
+   Example 1.94. t_set_disable_failover usage
 ...
 route {
 ...
@@ -2839,11 +2855,11 @@ route {
 ...
 }
 
-4.46.  t_set_disable_internal_reply(0|1)
+4.47.  t_set_disable_internal_reply(0|1)
 
    Turn off/on sending internally a SIP reply in case of relay errors.
 
-   Example 1.94. t_set_disable_internal_reply usage
+   Example 1.95. t_set_disable_internal_reply usage
 ...
 t_set_disable_internal_reply(1); # turn off sending internal reply on error
 if(!t_relay()) {
@@ -2851,7 +2867,7 @@ if(!t_relay()) {
 }
 ...
 
-4.47.  t_replicate([params])
+4.48.  t_replicate([params])
 
    Replicate the SIP request to a specific address. Return values are the
    same as for t_relay(). Note that responses to the replicated request
@@ -2876,7 +2892,7 @@ if(!t_relay()) {
      * hostport - address in "host:port" format. It can be given via an
        AVP.
 
-   Example 1.95. t_replicate usage
+   Example 1.96. t_replicate usage
 ...
 # sent to 1.2.3.4:5060 over tcp
 t_replicate("sip:1.2.3.4:5060;transport=tcp");
@@ -2889,7 +2905,7 @@ t_replicate("sip:$var(h);transport=tls");
 t_replicate_to_udp("1.2.3.4", "5060");
 ...
 
-4.48.  t_relay_to(proxy, flags)
+4.49.  t_relay_to(proxy, flags)
 
    Forward the SIP request to a specific address, controlling internal
    behavior via flags.
@@ -2910,7 +2926,7 @@ t_replicate_to_udp("1.2.3.4", "5060");
           + 0x02 - do not generate reply on internal error.
           + 0x04 - disable dns failover.
 
-   Example 1.96. t_relay_to usage
+   Example 1.97. t_relay_to usage
 ...
 # sent to 1.2.3.4:5060 over tcp
 t_relay_to("tcp:1.2.3.4:5060");
@@ -2922,7 +2938,7 @@ t_relay_to("tls:1.2.3.4");
 t_relay_to("0x01");
 ...
 
-4.49.  t_set_no_e2e_cancel_reason(0|1)
+4.50.  t_set_no_e2e_cancel_reason(0|1)
 
    Enables/disables reason header (RFC 3326) copying from the triggering
    received CANCEL to the generated hop-by-hop CANCEL. 0 enables and 1
@@ -2936,7 +2952,7 @@ t_relay_to("0x01");
 
    See also: e2e_cancel_reason.
 
-   Example 1.97. t_set_no_e2e_cancel_reason usage
+   Example 1.98. t_set_no_e2e_cancel_reason usage
 ...
 route {
 ...
@@ -2946,7 +2962,7 @@ opying
 ...
 }
 
-4.50.  t_is_set(target)
+4.51.  t_is_set(target)
 
    Return true if the attribute specified by 'target' is set for
    transaction.
@@ -2959,13 +2975,13 @@ opying
      * onreply_route - the function returns true if an onreply route is
        set to be executed.
 
-   Example 1.98. t_replicate usage
+   Example 1.99. t_replicate usage
 ...
 if(!t_is_set("failure_route"))
     LM_DBG("no failure route will be executed for current transaction\n");
 ...
 
-4.51.  t_use_uac_headers()
+4.52.  t_use_uac_headers()
 
    Set internal flags to tell tm to use UAC side for building headers for
    local generated requests (ACK, CANCEL) - useful when changing From/To
@@ -2973,12 +2989,12 @@ if(!t_is_set("failure_route"))
 
    It returns true.
 
-   Example 1.99. t_use_uac_headers usage
+   Example 1.100. t_use_uac_headers usage
 ...
 t_use_uac_headers();
 ...
 
-4.52.  t_is_retr_async_reply()
+4.53.  t_is_retr_async_reply()
 
    Check to see if the reply is a retransmitted reply on a transaction
    that is currently suspended asynchronously (suspended during reply
@@ -2992,7 +3008,7 @@ t_use_uac_headers();
    returns true if the transaction is currently reply suspended or false
    if not.
 
-   Example 1.100. t_is_retr_async_reply usage
+   Example 1.101. t_is_retr_async_reply usage
 ...
 if (t_is_retr_async_reply()) {
         xlog("L_DBG", "Dropping retransmitted reply which is still currently sus
@@ -3001,7 +3017,7 @@ pended\n");
 }
 ...
 
-4.53.  t_uac_send(method, ruri, nexthop, socket, headers, body)
+4.54.  t_uac_send(method, ruri, nexthop, socket, headers, body)
 
    Send a UAC request.
 
@@ -3017,39 +3033,39 @@ pended\n");
        Content-Type header must exist.
      * body - SIP message body (can be empty).
 
-   Example 1.101. t_uac_send usage
+   Example 1.102. t_uac_send usage
 ...
 t_uac_send("OPTIONS", "sip:alice@kamailio.org", "", "",
     "From: bob@kamailio.org;tag=2w3e\r\nTo: bob@kamailio.org", "");
 ...
 
-4.54.  t_get_status_code()
+4.55.  t_get_status_code()
 
    Return the status code for transaction - the most relevant SIP reply
    status code, or -1 in case of error or no status code was set.
 
-   Example 1.102. t_get_status_code usage
+   Example 1.103. t_get_status_code usage
 ...
 $var(ts) = t_get_status_code();
 if($var(ts) == 500) { ... }
 ...
 
-4.55.  t_clean()
+4.56.  t_clean()
 
    Cleans active but very old transactions. Returns true (1). Can be
    called from any route.
 
-   Example 1.103. t_clean usage
+   Example 1.104. t_clean usage
 ...
 t_clean();
 ...
 
-4.56.  t_exists()
+4.57.  t_exists()
 
    Return true if a transaction for the current message exists, without
    setting the global references.
 
-   Example 1.104. t_exists usage
+   Example 1.105. t_exists usage
 ...
 reply_route {
     if (!t_exists()) {
@@ -3179,7 +3195,7 @@ reply_route {
    enabled with the t_on_branch_failure function. This event_route uses
    the BRANCH_FAILURE_ROUTE route type.
 
-   Example 1.105. event_route[tm:branch-failure:id] usage
+   Example 1.106. event_route[tm:branch-failure:id] usage
 ...
 request_route {
     ...
@@ -3205,7 +3221,7 @@ event_route[tm:branch-failure:myroute] {
    The request can still be updated, i.e., changes are possible to R-URI
    ($ru), destination URI ($du) or the send socket ($fs).
 
-   Example 1.106. event_route[tm:local-request] usage
+   Example 1.107. event_route[tm:local-request] usage
 ...
 event_route [tm:local-request] {
     xlog("L_INFO", "Routing locally generated $rm to $ru\n");
@@ -3218,7 +3234,7 @@ event_route [tm:local-request] {
    Executed after the tm module sent a local generated, transaction
    stateful response.
 
-   Example 1.107. event_route[tm:local-response] usage
+   Example 1.108. event_route[tm:local-response] usage
 ...
 event_route[tm:local-response] {
     xlog("tm:local-response replied locally\n");