Realtime and Resources

Realtime And Resources

Resource modules provide shared services used by channel drivers, applications, functions and the core.

Realtime Configuration

Module	Purpose
res_realtime	Realtime data lookup/rewrite support.
res_config_pgsql	PostgreSQL realtime configuration driver.
res_config_odbc	ODBC realtime configuration driver.
res_config_sqlite3	SQLite realtime configuration driver.
res_config_ldap	LDAP realtime interface.
res_config_curl	Realtime over curl.
res_config_mysql	MySQL realtime add-on.

Important config files:

configs/extconfig.conf.sample
configs/res_pgsql.conf.sample
configs/res_odbc.conf.sample
configs/res_config_sqlite3.conf.sample
configs/res_ldap.conf.sample
configs/res_config_mysql.conf.sample

For chan_sofia, important realtime families are:

sippeers
sipregs

PostgreSQL Cache

res_config_pgsql includes cache support and UDP cache invalidation behavior. The sample config and detailed wiki page document:

• [general] database connection.
• [cache] item and byte limits.
• [networkupd] UDP invalidation port.
• [selectfunc] mappings for SELECT function calls.
• [updatefunc] and [insertfunc] placeholders/reserved behavior.

Read:

configs/res_pgsql.conf.sample

Detailed setup:

[[PostgreSQL-Realtime-Cache]]

RTP, SRTP And Media Resources

Module	Purpose
res_rtp_gabpbx	Main GABPBX RTP stack.
res_rtp_multicast	Multicast RTP engine.
res_srtp	Secure RTP support.
res_stun_monitor	STUN network monitor.
res_fax	Generic fax applications and API.
res_fax_spandsp	SpanDSP G.711 and T.38 fax technologies.

Important config files:

configs/rtp.conf.sample
configs/udptl.conf.sample
configs/res_fax.conf.sample
configs/res_stun_monitor.conf.sample

AMI, CLI, AGI And HTTP

Module	Purpose
res_agi	AGI support.
res_clialiases	CLI aliases.
res_clioriginate	CLI originate support.
res_http_post	HTTP POST support.
res_curl	cURL resource module.
res_phoneprov	HTTP phone provisioning.

Important config files:

configs/manager.conf.sample
configs/http.conf.sample
configs/cli_aliases.conf.sample
configs/phoneprov.conf.sample

Calendar, Messaging And External Services

Module	Purpose
res_calendar	Generic calendar framework.
res_calendar_caldav	CalDAV integration.
res_calendar_exchange	Exchange calendar integration.
res_calendar_ews	Exchange Web Services calendar integration.
res_calendar_icalendar	iCalendar integration.
res_jabber	AJI Jabber interface.
res_smdi	Simplified Message Desk Interface.
res_snmp	SNMP subagent.
res_pktccops	PacketCable COPS support.

Audio, Speech And Monitoring

Module	Purpose
res_musiconhold	Music on hold.
res_monitor	Call monitoring resource.
res_mutestream	Mute audio stream resources.
res_speech	Generic speech recognition API.
res_convert	File format conversion CLI command.

Timing And System Resources

Module	Purpose
res_timing_timerfd	Linux timerfd timing interface.
res_timing_pthread	pthread timing interface.
res_timing_dahdi	DAHDI timing interface.
res_timing_kqueue	kqueue timing interface.
res_limit	Resource limits.
res_security_log	Security event logging.
res_crypto	Cryptographic digital signatures.
res_adsi	ADSI resource.
res_ael_share	Shared AEL support code.
res_ais	AIS integration.

Operational Notes

• RTP and SRTP resources must be loaded before encrypted SIP media can work.
• Realtime resources must match extconfig.conf.
• Calendar/Jabber/SNMP modules require their own external service credentials.
• Timing modules affect conferencing, playback timing and other media behavior.