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NOTES
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- Call parking (SUSPEND/RESUME) does not use the call parking "infrastructure"
in Asterisk. All my attempts to use ast_park_call() failed as:
1- We need to respond to a suspend_indication in no more than 4 seconds, thus
we may not have enough time to play the parking number by voice. The
standard seems to prevent announcements between SUSPEND and SUSPEND ACK.
2- Some phone even ignores the Display information element, so the user is
not able to know where his call has been parked.
3- ast_park_call() does sleep when saying the numbers, if we make it sleep
in another thread we have problems getting back the parking number
4- Since we don't release the B channel associated with the call we need
to know if the remote user cleared the call or the call has been picked
up by a non-vISDN channel. No provision exists in * to notify other
channel drivers for such events.
Layer 1 States:
State F1 (INACTIVE): in this inactive (powered-off) state, the TE is not
transmitting and cannot detect the presence of any input signals. In the case of
locally powered TEs, which cannot detect the appearance/disappearance of power
source 1 or 2, this state is entered when local power is not present. For TEs
that can detect power source 1 or power source 2, this state is entered whenever
loss of power (required to support all TEI functions) is detected, or when the
absence of power from source 1 or 2, whichever power source is used for
determining the connection status, is detected.
State F2 (SENSING): this state is entered after the TE has been powered on but
has not determined the type of signal (if any) that the TE is receiving. When in
this state, a TE may go to a low-power consumption mode as specified in
subclause 6.1.8.
State F3 (DEACTIVATED): this is the deactivated state of the physical protocol.
Neither the NT nor the TE is transmitting. When in this state, a TE may go to a
low-power consumption mode as specified in subclause 6.1.8.
State F4 (AWAITING Signal): when the TE is requested to initiate activation by
means of a PH-ACTIVATE REQUEST primitive, it transmits a signal (INFO 1) and
waits for a response from the NT.
State F5 (IDENTIFYING Input): at the first receipt of any signal from the NT,
the TE ceases to transmit INFO 1 and awaits identification of signal INFO 2 or
INFO 4.
State F6 (SYNCHRONIZED): when the TE receives an activation signal (INFO 2) from
the NT, it responds with a signal (INFO 3) and waits for normal frames (INFO 4)
from the NT.
State F7 (ACTIVATED): state F7 is the only state where B and D channel contain
operational data. This is the normal activate state with the protocol activated
in both directions.
State F8 (LOST Framing): this is the condition when the TE has lost frame
synchronization and is awaiting re-synchronization by receipt of INFO 2 or INFO
4 or deactivation by receipt of INFO 0.
State G1 (DEACTIVATED): in this deactivated state, the NT is not transmitting.
When in this state, an NT may go to a low-power consumption mode as specified in
subclause 6.1.8.
State G2 (PENDING Activation): in this partially active state
the NT sends INFO 2 while waiting for INFO 3. This state will be entered on
request by higher layers, by means of a PH-ACTIVATE REQUEST primitive, or on the
receipt of INFO 0 or lost framing while in the active state (G3). The choice to
eventually deactivate is up to higher layers at the network side.
State G3 (ACTIVE): this is the normal active state where the NT and TE are
active with INFO 4 and INFO 3, respectively. A deactivation may be initiated by
the NT system management, by means of an MPH-DEACTIVATE REQUEST primitive, or
the NT may be the active state all the time, under non-fault conditions.
State G4 (PENDING Deactivation): when the NT wishes to deactivate, it may wait
for a timer to expire before returning to the deactive state.
How to write a vISDN driver:
The ISDN is a complex environment. On the same physical interface there are
several multiplexed channels, from three channels on basic rate interfaces
up to 30 channels on primary rate interfaces.
The role of a vISDN driver is analougue to that of a network driver but with
much more architectural complexity.
The increased complexity begins with the need to handle multiple channels,
each one with its role, bitrate, framing and type of payload. For example,
a bearer (B) channel is a full-duplex, fixed bitrate, synchronous and
point-to-point bitstream, however, it may transport streamed voice, video,
packets, asynchronous data, etc... and the far-end point will be connected
by means of a complex signalling protocol.
Luckilly your driver will not be involved with much of that complexity,
however, since most hardware provides helpers for handling some type of
payload, your driver may want to make use of them.
- Initialize the port(s)
- Register the port(s)
- For each channel
- Initialize
- Register
Your driver will export a series of callbacks:
connect()
disconnect()
open()
close()
Before a channel il your driver is going to be used it must be connected.
When the connection command comes from the user, vISDN core will invoke the
visdn_cxc_connect() function for the crossconnector. The CXC in turn will
invoke the connect() callback so that you can do the real stuff.
In the connect() function you may allocate the resources on the hardware.
When the entity responsible for the channel management decides it is time
to start moving stuff on the channel, it will call open() and your driver
may thus configure the hardware for the actual transfer.
No transfer request will be sent to the driver and no request should be made
by the driver before open() returns successfully.
Nothing forces you to allocate the resources in connect(), you may do all
the work in open(). On the other side, you may find out that certain
constraints become known just after you allocate the resources on the hardware.
For example, on HFC-4S/8S/E1 based boards the MTU depends on the FIFO size but
the FIFO may not be all of the same size, so, you only know the actual
MTU after the FIFO has been allocated.
By allocating the hardware resource in the connect() phase you have a chance of
re-negotiating the parameters before the channel is actually opened (which
may be too late).
Negotiation
-----------
When connecting two channels together, absolutely no sort of payload adaptation
is performed by the crossconnector. The crossconnector's duty is to move the
channel's payload from one channel to another as fast as it can.
The consequence is that the channels must agree on what the payload is, how
it is formatted, how it should be moved and so on. Therefore, the
crossconnector arbitrates a negotiation of such parameters between the channels
until an agreement can be found.
To date, the following parameters have been identified:
- Layer 1 protocol
- Bitrate
- Bit-order
Furthermore, when the Layer 1 protocol is a framed protocol, we need to know
the maximum frame size supported by the channels and (more importantly) the
maximum frame size along the path in either direction.
It is important to understand that each channel is full-duplex, thus, it is
actually comprised of two simplex channels. Parameters negotiation could
have been performed on each simplex channel independently, however, some
hardware does not support etherogeneous channel configuration which, in turn,
is often unneeded. So, i
start_queue, stop_queue, wake_queue
These callbacks may be called with interrupts disabled, must not sleep and
must not call each other.
See Documentation/networking/netdevices.txt for a template
HISTORY:
9/8/2005 23:40
In production on nabla
18/2/2005 2:05
First call made throught the public network... no voice however :)
22/2/2005 01:23
First PPP connecion
18/3/2005 14:30
LAPD with full features
17/4/2005 21:00
q.931 completed
20/4/2005 01:00
First audio heared
26/4/2004 22:40
First half-call (voice in only one direction :))
26/4/2004 23:20
First full-call :)
DL-UNIT DATA-REQUEST
sendmsg(2) with MSG_OOB flag
DL-UNIT DATA-INDICATION
recvmsg(2) with MSG_OOB flag
DL-DATA-REQUEST
sendmsg(2)
DL-DATA-INDICATION
recvmsg(2)
DL-ESTABLISH-REQUEST
connect(2)
DL-ESTABLISH-INDICATION
Error from recvmsg
EISCONN
DL-ESTABLISH-CONFIRM
Successful return from connect(2) in synchronous operation
DL-RELEASE-REQUEST
shutdown(2)
DL-RELEASE-INDICATION
Error from connect(2)
EIO = Too many retries assigning TEI
ETIMEDOUT = Too many retries establishing connection
Error from recvmsg
ECONNRESET
DL-RELEASE-CONFIRM
Successful return from shutdown(2) in synchronous operation
Tei Management:
-----------------------------------------------
MDL-ASSIGN-REQUEST
lapd_mdl_assign_request
MDL-ASSIGN-INDICATION
lapd_utme_start_tei_request
MDL-REMOVE-REQUEST
lapd_mdl_remove_request
MDL-ERROR-INDICATION
MDL-ERROR-RESPONSE
lapd_mdl_error_response
Physical
-----------------------------------------------
PH-DATA-REQUEST
dev_queue_xmit
PH-DATA-INDICATION
lapd_rcv
PH-ACTIVATE-REQUEST
PH-ACTIVATE-INDICATION
netif_carrier_on
PH-DEACTIVATE-REQUEST
PH-DEACTIVATE-INDICATION
netif_carrier_off -> lapd_device_event/state &
MPH-ACTIVATE-INDICATION
MPH-DEACTIVATE-REQUEST
MPH-DEACTIVATE-INDICATION
MPH-INFORMATION-INDICATION
q.931 procedures:
-------------------------------
L3
DL-ESTABLISH-REQUEST
MDL-ASSIGN-REQUEST
PH-ACTIVATE-REQ
wait
PH-ACTIVATE-IND
wait
MDL-ASSIGN-INDICATION
wait
DL-ESTABLISH-CONFIRM
Locking critical functions:
lapd_utme_T202_timer
Acquires:
spin_lock(&tme->lock);
read_lock_bh(&lapd_hash_lock);
bh_sock_lock(sk);
lapd_utme_start_tei_request
Acquires:
spin_lock(&tme->lock);
lapd_utme_recv_tei_remove
Acquires:
read_lock_bh(&lapd_utme_hash_lock);
read_lock_bh(&lapd_hash_lock);
bh_sock_lock(sk);
lapd_pass_frame_to_socket_te
Acquires:
read_lock_bh(&lapd_hash_lock);
bh_lock_sock(sk); (in lapd_pass_frame_to_socket())
Some ideas for me...
[01:18] <fsck> uhm l'ecocancel?
[01:19] <vihai> E' da configurare per ogni interfaccia? In che casi non va messo?
[01:20] <fsck> quando quell'interfaccia non è al margine di una rete tutta digitale è inutile
[01:20] <fsck> la segnalazione
[01:20] <fsck> o meglio la "variante" della segnalazione
[01:21] <vihai> Non faccio prima a vedere se il canale connesso è digiale o meno e abilitare l'echo cancel dinamicamente?
[01:21] <fsck> come fai a sapere se il canale a valle è digitale o meno?
[01:21] <fsck> e soprattutto se lui fa l'ecocancel
[01:22] <vihai> C'è un flag in *, devo vedere se è fatto apposta
[01:23] <fsck> quello della digital quality?
[01:23] <fsck> se è quello è per settare l'ec PER CALL
[01:23] <vihai> Comunqu posso fare un (yes, no, auto)
[01:23] <vihai> AST_FLAG_DIGITAL
[01:23] <fsck> si è quello
[01:23] <fsck> le chiamate fax non vogliono l'ec
[01:24] <fsck> io metterei un flag
[14:19] <vihai> Allora... ragiono a voce alta... tu fai segno con la testa se va bene
[14:19] <vihai> Io ricevo un setup_indication dalla libq931 (ovvero ho ricevuto un SETUP)
[14:20] <vihai> Nel setup_indication c'è un numero valido, overlap dialing è disattivato, io lancio il pbx e finisco mandando un proceeding
[14:20] <vihai> Se il numero non è completo/invalito, rispondo con un setup_reject
[14:21] <fsck> ok
[14:22] <vihai> Se l'overlap è abilitato guardo se il numero PUO' matchare
[14:22] <vihai> Se non puo' matchare => reject
[14:22] <vihai> Finché può matchare continuo l'overlap
[14:22] <vihai> Quando il numero matcha un'estensione (che può essere una regexp) devo guardare se l'estensione supporta l'overlap
[14:23] <vihai> Se lo supporta faccio partire il pbx e mando il resto delle cifre come frame DTMF
[14:24] <vihai> Se non lo supporta uso un timeout
[14:24] <vihai> Il problema è... come capisco se l'estensione supporta l'overlap dialing?
[14:26] <fsck> mhh... non credo ci sia un modo adesso
[14:29] <vihai> Uhm... allora....
[14:30] <vihai> Posso fare che se durante l'overlap esiste un'estensione e NON può matchare ulteriormente (ovvero non è una regexp) faccio partire subito il pbx
This is an attempt at writing a new and improved ISDN layer for Linux
Fundamently it is composed of three steps:
- Implement q.921/LAPD thorught the netdev infrastructure
- Implement some reference driver
- Implement a TDM bus and voice API
- Manages one TEI per socket meaning that more than one Layer 3 client may speak
indipendendently on the channel, e.g. a low level q.931 signalling adaptor for
voice applications, an high-level q.931 daemon and an X.25 endpoint daemon (?).
The ISDN networking doesn't properly map with the socket layer or with the
ISO/OSI layers.
The Layer 1 (Physical layer) can (and will) be activated/deactivated on BRI ports
when Layer 2 is idle for a specified timeout
There is no MAC address and network address,
Un DLC è identificato da:
(Interfaccia, TEI, SAPI)
There are two roles, the NT and the TE
Data flows from a TE to the NT and from the NT to one or more TEs.
Broadcasts are supported in one direction only (from NT to TE).
Avrei potuto implementare anche il q.921 in user mode
Una socket è un'entità che rappresenta l'endpoint di una comunicazione.
Solo una socket può essere aperta con ruolo di NT mentre più di una socket può
essere aperta in TE mode
La trasmissione unacknowledged (simile a SOCK_DGRAM) e acknowledged
(analoga a SOCK_SEQPACKET) sono MODALITA' di trasmissione all'interno della stessa
Data Link Connection, quindi ho deciso di implementarle all'interno della stessa
socket.
[17193223.096000] usbcore: registered new driver hfc-usb
[17193229.844000] visdn-netdev: Cannot register net device visdn0, aborting.
[17193229.844000] visdn: visdn_chan_unregister(000081) called
[17193229.844000] visdn: visdn_chan_unregister(000080) called
[17193229.876000] visdn: visdn_cxc_disconnect()
[17193229.876000] visdn: Simplex disconnect '000053' with '000063' through CXC '0'
[17193229.876000] visnd_chan_disable(000053)
[17193229.876000] visnd_chan_disable(000063)
[17193229.876000] visdn: Simplex disconnect '000063' with '000053' through CXC '0'
[17193229.876000] visnd_chan_disable(000063)
[17193229.876000] visnd_chan_disable(000053)
[17193229.876000] Connecting '000053' to '000063' mode=1
[17193229.876000] visdn: Connecting chan '000053' to chan '000063'
[17193229.876000] visdn: Simplex connect '000053' with '000063' through CXC '0'
[17193229.876000] visdn: Simplex connect '000063' with '000053' through CXC '0'
[17193229.876000]
[17193229.896000] visdn: visdn_cxc_disconnect()
[17193229.896000] visdn: Simplex disconnect '000056' with '000064' through CXC '0'
[17193229.896000] visnd_chan_disable(000056)
[17193229.896000] visnd_chan_disable(000064)
[17193229.896000] visdn: Simplex disconnect '000064' with '000056' through CXC '0'
[17193229.896000] visnd_chan_disable(000064)
[17193229.896000] visnd_chan_disable(000056)
[17193229.896000] Connecting '000056' to '000064' mode=1
[17193229.900000] visdn: Connecting chan '000056' to chan '000064'
[17193229.900000] visdn: Simplex connect '000056' with '000064' through CXC '0'
[17193229.900000] visdn: Simplex connect '000064' with '000056' through CXC '0'
[17193229.900000]
[17193229.928000] visdn-netdev: Cannot register net device visdn1.0, aborting.
[17193229.928000] visdn: visdn_chan_unregister(000083) called
[17193229.928000] visdn: visdn_chan_unregister(000082) called
[17193229.948000] visdn: visdn_cxc_disconnect()
[17193229.948000] visdn: Simplex disconnect '000033' with '000001' through CXC '1'
[17193229.948000] visnd_chan_disable(000033)
[17193229.948000] visnd_chan_disable(000001)
[17193229.948000] visdn: Simplex disconnect '000001' with '000033' through CXC '1'
[17193229.948000] visnd_chan_disable(000001)
[17193229.952000] visnd_chan_disable(000033)
[17193229.952000] visdn: visdn_cxc_disconnect()
[17193229.952000] visdn: Simplex disconnect '000001' with '000065' through CXC '0'
[17193229.952000] visnd_chan_disable(000001)
[17193229.952000] visnd_chan_disable(000065)
[17193229.952000] visdn: Simplex disconnect '000065' with '000001' through CXC '0'
[17193229.952000] visnd_chan_disable(000065)
[17193229.952000] visnd_chan_disable(000001)
[17193229.952000] Connecting '000033' to '000065' mode=1
[17193229.952000] visdn: Connecting chan '000001' to chan '000065'
[17193229.952000] visdn: Simplex connect '000001' with '000065' through CXC '0'
[17193229.952000] visdn: Simplex connect '000065' with '000001' through CXC '0'
[17193229.952000] visdn: Connecting chan '000033' to chan '000001'
[17193229.952000] visdn: Simplex connect '000033' with '000001' through CXC '1'
[17193229.952000] visdn: Simplex connect '000001' with '000033' through CXC '1'
[17193229.952000]
[17193229.972000] visdn: visdn_cxc_disconnect()
[17193229.972000] visdn: Simplex disconnect '000036' with '000002' through CXC '1'
[17193229.972000] visnd_chan_disable(000036)
[17193229.972000] visnd_chan_disable(000002)
[17193229.972000] visdn: Simplex disconnect '000002' with '000036' through CXC '1'
[17193229.972000] visnd_chan_disable(000002)
[17193229.972000] visnd_chan_disable(000036)
[17193229.972000] visdn: visdn_cxc_disconnect()
[17193229.972000] visdn: Simplex disconnect '000002' with '000066' through CXC '0'
[17193229.972000] visnd_chan_disable(000002)
[17193229.972000] visnd_chan_disable(000066)
[17193229.972000] visdn: Simplex disconnect '000066' with '000002' through CXC '0'
[17193229.972000] visnd_chan_disable(000066)
[17193229.972000] visnd_chan_disable(000002)
[17193229.976000] Connecting '000036' to '000066' mode=1
[17193229.976000] visdn: Connecting chan '000002' to chan '000066'
[17193229.976000] visdn: Simplex connect '000002' with '000066' through CXC '0'
[17193229.976000] visdn: Simplex connect '000066' with '000002' through CXC '0'
[17193229.976000] visdn: Connecting chan '000036' to chan '000002'
[17193229.976000] visdn: Simplex connect '000036' with '000002' through CXC '1'
[17193229.976000] visdn: Simplex connect '000002' with '000036' through CXC '1'
[17193229.976000]
[17193229.984000] visdn-netdev: Cannot register net device visdn1.1, aborting.
[17193229.984000] visdn: visdn_chan_unregister(000085) called
[17193229.984000] visdn: visdn_chan_unregister(000084) called
[17193230.008000] visdn: visdn_cxc_disconnect()
[17193230.008000] visdn: Simplex disconnect '000038' with '000003' through CXC '1'
[17193230.008000] visnd_chan_disable(000038)
[17193230.008000] visnd_chan_disable(000003)
[17193230.008000] visdn: Simplex disconnect '000003' with '000038' through CXC '1'
[17193230.008000] visnd_chan_disable(000003)
[17193230.008000] visnd_chan_disable(000038)
[17193230.008000] visdn: visdn_cxc_disconnect()
[17193230.008000] visdn: Simplex disconnect '000003' with '000067' through CXC '0'
[17193230.008000] visnd_chan_disable(000003)
[17193230.008000] visnd_chan_disable(000067)
[17193230.008000] visdn: Simplex disconnect '000067' with '000003' through CXC '0'
[17193230.008000] visnd_chan_disable(000067)
[17193230.008000] visnd_chan_disable(000003)
[17193230.008000] Connecting '000038' to '000067' mode=1
[17193230.008000] visdn: Connecting chan '000003' to chan '000067'
[17193230.008000] visdn: Simplex connect '000003' with '000067' through CXC '0'
[17193230.008000] visdn: Simplex connect '000067' with '000003' through CXC '0'
[17193230.008000] visdn: Connecting chan '000038' to chan '000003'
[17193230.008000] visdn: Simplex connect '000038' with '000003' through CXC '1'
[17193230.008000] visdn: Simplex connect '000003' with '000038' through CXC '1'
[17193230.008000]
[17193230.028000] visdn: visdn_cxc_disconnect()
[17193230.028000] visdn: Simplex disconnect '000041' with '000004' through CXC '1'
[17193230.028000] visnd_chan_disable(000041)
[17193230.028000] visnd_chan_disable(000004)
[17193230.028000] visdn: Simplex disconnect '000004' with '000041' through CXC '1'
[17193230.028000] visnd_chan_disable(000004)
[17193230.028000] visnd_chan_disable(000041)
[17193230.028000] visdn: visdn_cxc_disconnect()
[17193230.028000] visdn: Simplex disconnect '000004' with '000068' through CXC '0'
[17193230.028000] visnd_chan_disable(000004)
[17193230.028000] visnd_chan_disable(000068)
[17193230.028000] visdn: Simplex disconnect '000068' with '000004' through CXC '0'
[17193230.028000] visnd_chan_disable(000068)
[17193230.028000] visnd_chan_disable(000004)
[17193230.032000] Connecting '000041' to '000068' mode=1
[17193230.032000] visdn: Connecting chan '000004' to chan '000068'
[17193230.032000] visdn: Simplex connect '000004' with '000068' through CXC '0'
[17193230.032000] visdn: Simplex connect '000068' with '000004' through CXC '0'
[17193230.032000] visdn: Connecting chan '000041' to chan '000004'
[17193230.032000] visdn: Simplex connect '000041' with '000004' through CXC '1'
[17193230.032000] visdn: Simplex connect '000004' with '000041' through CXC '1'
[17193230.032000]
[17193230.044000] visdn-netdev: Cannot register net device visdn1.2, aborting.
[17193230.044000] visdn: visdn_chan_unregister(000087) called
[17193230.044000] visdn: visdn_chan_unregister(000086) called
[17193230.064000] visdn: visdn_cxc_disconnect()
[17193230.064000] visdn: Simplex disconnect '000043' with '000005' through CXC '1'
[17193230.064000] visnd_chan_disable(000043)
[17193230.064000] visnd_chan_disable(000005)
[17193230.064000] visdn: Simplex disconnect '000005' with '000043' through CXC '1'
[17193230.064000] visnd_chan_disable(000005)
[17193230.064000] visnd_chan_disable(000043)
[17193230.064000] visdn: visdn_cxc_disconnect()
[17193230.064000] visdn: Simplex disconnect '000005' with '000069' through CXC '0'
[17193230.064000] visnd_chan_disable(000005)
[17193230.064000] visnd_chan_disable(000069)
[17193230.064000] visdn: Simplex disconnect '000069' with '000005' through CXC '0'
[17193230.064000] visnd_chan_disable(000069)
[17193230.064000] visnd_chan_disable(000005)
[17193230.064000] Connecting '000043' to '000069' mode=1
[17193230.064000] visdn: Connecting chan '000005' to chan '000069'
[17193230.064000] visdn: Simplex connect '000005' with '000069' through CXC '0'
[17193230.064000] visdn: Simplex connect '000069' with '000005' through CXC '0'
[17193230.064000] visdn: Connecting chan '000043' to chan '000005'
[17193230.064000] visdn: Simplex connect '000043' with '000005' through CXC '1'
[17193230.064000] visdn: Simplex connect '000005' with '000043' through CXC '1'
[17193230.064000]
[17193230.084000] visdn: visdn_cxc_disconnect()
[17193230.084000] visdn: Simplex disconnect '000046' with '000006' through CXC '1'
[17193230.084000] visnd_chan_disable(000046)
[17193230.084000] visnd_chan_disable(000006)
[17193230.084000] visdn: Simplex disconnect '000006' with '000046' through CXC '1'
[17193230.084000] visnd_chan_disable(000006)
[17193230.084000] visnd_chan_disable(000046)
[17193230.084000] visdn: visdn_cxc_disconnect()
[17193230.084000] visdn: Simplex disconnect '000006' with '000070' through CXC '0'
[17193230.084000] visnd_chan_disable(000006)
[17193230.084000] visnd_chan_disable(000070)
[17193230.084000] visdn: Simplex disconnect '000070' with '000006' through CXC '0'
[17193230.084000] visnd_chan_disable(000070)
[17193230.084000] visnd_chan_disable(000006)
[17193230.088000] Connecting '000046' to '000070' mode=1
[17193230.088000] visdn: Connecting chan '000006' to chan '000070'
[17193230.088000] visdn: Simplex connect '000006' with '000070' through CXC '0'
[17193230.088000] visdn: Simplex connect '000070' with '000006' through CXC '0'
[17193230.088000] visdn: Connecting chan '000046' to chan '000006'
[17193230.088000] visdn: Simplex connect '000046' with '000006' through CXC '1'
[17193230.088000] visdn: Simplex connect '000006' with '000046' through CXC '1'
[17193230.088000]
[17193230.100000] visdn-netdev: Cannot register net device visdn1.3, aborting.
[17193230.100000] visdn: visdn_chan_unregister(000089) called
[17193230.100000] visdn: visdn_chan_unregister(000088) called
[17193230.120000] visdn: visdn_cxc_disconnect()
[17193230.120000] visdn: Simplex disconnect '000048' with '000007' through CXC '1'
[17193230.120000] visnd_chan_disable(000048)
[17193230.120000] visnd_chan_disable(000007)
[17193230.120000] visdn: Simplex disconnect '000007' with '000048' through CXC '1'
[17193230.120000] visnd_chan_disable(000007)
[17193230.120000] visnd_chan_disable(000048)
[17193230.120000] visdn: visdn_cxc_disconnect()
[17193230.120000] visdn: Simplex disconnect '000007' with '000071' through CXC '0'
[17193230.120000] visnd_chan_disable(000007)
[17193230.120000] visnd_chan_disable(000071)
[17193230.120000] visdn: Simplex disconnect '000071' with '000007' through CXC '0'
[17193230.120000] visnd_chan_disable(000071)
[17193230.120000] visnd_chan_disable(000007)
[17193230.120000] Connecting '000048' to '000071' mode=1
[17193230.120000] visdn: Connecting chan '000007' to chan '000071'
[17193230.120000] visdn: Simplex connect '000007' with '000071' through CXC '0'
[17193230.120000] visdn: Simplex connect '000071' with '000007' through CXC '0'
[17193230.120000] visdn: Connecting chan '000048' to chan '000007'
[17193230.120000] visdn: Simplex connect '000048' with '000007' through CXC '1'
[17193230.120000] visdn: Simplex connect '000007' with '000048' through CXC '1'
[17193230.120000]
[17193230.140000] visdn: visdn_cxc_disconnect()
[17193230.140000] visdn: Simplex disconnect '000051' with '000008' through CXC '1'
[17193230.140000] visnd_chan_disable(000051)
[17193230.140000] visnd_chan_disable(000008)
[17193230.140000] visdn: Simplex disconnect '000008' with '000051' through CXC '1'
[17193230.140000] visnd_chan_disable(000008)
[17193230.140000] visnd_chan_disable(000051)
[17193230.140000] visdn: visdn_cxc_disconnect()
[17193230.140000] visdn: Simplex disconnect '000008' with '000072' through CXC '0'
[17193230.140000] visnd_chan_disable(000008)
[17193230.140000] visnd_chan_disable(000072)
[17193230.140000] visdn: Simplex disconnect '000072' with '000008' through CXC '0'
[17193230.140000] visnd_chan_disable(000072)
[17193230.140000] visnd_chan_disable(000008)
[17193230.144000] Connecting '000051' to '000072' mode=1
[17193230.144000] visdn: Connecting chan '000008' to chan '000072'
[17193230.144000] visdn: Simplex connect '000008' with '000072' through CXC '0'
[17193230.144000] visdn: Simplex connect '000072' with '000008' through CXC '0'
[17193230.144000] visdn: Connecting chan '000051' to chan '000008'
[17193230.144000] visdn: Simplex connect '000051' with '000008' through CXC '1'
[17193230.144000] visdn: Simplex connect '000008' with '000051' through CXC '1'
[17193230.144000]
[17193230.160000] visdn-netdev: Cannot register net device visdn2, aborting.
[17193230.160000] visdn: visdn_chan_unregister(000091) called
[17193230.160000] visdn: visdn_chan_unregister(000090) called
[17193230.180000] Connecting '000075' to '000073' mode=1
[17193230.180000] visdn: Connecting chan '000075' to chan '000073'
[17193230.180000] visdn: Simplex connect '000075' with '000073' through CXC '0'
[17193230.180000] visdn: Simplex connect '000073' with '000075' through CXC '0'
[17193230.180000]
[17193230.204000] Connecting '000078' to '000074' mode=1
[17193230.204000] visdn: Connecting chan '000078' to chan '000074'
[17193230.204000] visdn: Simplex connect '000078' with '000074' through CXC '0'
[17193230.204000] visdn: Simplex connect '000074' with '000078' through CXC '0'
[17193230.204000]