Buenos días,

tengo un E1 con 30 canales de Telmex, todo funciona muy bien excepto cuando un canal se queda bloqueado como lo muestro a continuación (omito algunos canales)

# asterisk -rx 'mfcr2 show channels'
Chan Variant Max ANI Max DNIS ANI First Immediate Accept Tx CAS   Rx CAS  
   1 MX      10      4        No        No               ANSWER   SEIZE  
   2 MX      10      4        No        No               ANSWER   SEIZE  
   3 MX      10      4        No        No               ANSWER   SEIZE  
   4 MX      10      4        No        No               ANSWER   SEIZE  
   [B]5 MX      10      4        No        No               IDLE     FORCED R [/B]  
   6 MX      10      4        No        No               ANSWER   SEIZE  
   7 MX      10      4        No        No               ANSWER   SEIZE  
   8 MX      10      4        No        No               ANSWER   SEIZE  
   9 MX      10      4        No        No               ANSWER   SEIZE  
  10 MX      10      4        No        No               ANSWER   SEIZE  
  11 MX      10      4        No        No               IDLE     IDLE    
  12 MX      10      4        No        No               IDLE     IDLE    
  13 MX      10      4        No        No               IDLE     IDLE    
  14 MX      10      4        No        No               SEIZE    ANSWER

Como pueden ver el canal 5 solo esta libre de salida pero no de entrada, cuando alguien intenta hacer una llamada dahdi asigna ese canal puesto que lo ve libre y cuando busca la manera de salir se encuentra con que el canal esta ocupado y reproduce el audio "Todas las lineas están ocupadas, por favor intente mas tarde". El canal tarda mucho tiempo en liberarse pero si lo hace. Lo que hice fue poner round robin para que tome los siguientes canales en lo que se libera ese canal bloqueado pero ni con eso puesto que las llamadas dan una vuelta completa a todos los canales y en este caso el canal 5 aún no se libera.

Anexo el log de MFC/R2

[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - Requested to make call (ANI=(restricted), DNIS=58552634, category=National Subscriber)
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - Outgoing call proceeding: ANI=(restricted), DNIS=58552634, Category=National Subscriber
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - CAS Tx >> [SEIZE] 0x00
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - CAS Raw Tx >> 0x01
[Jan 20 14:21:35] VERBOSE[3564] app_dial.c: -- Called DAHDI/r2/58552634
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: bits changed in chan 13
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - Bits changed from 0x08 to 0x0C
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - CAS Rx << [SEIZE ACK] 0x0C
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - MFC/R2 call acknowledge!
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - Sending DNIS digit 5
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 5 [ON]
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 1 [ON]
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 5 [OFF]
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 1 [OFF]
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - Sending DNIS digit 8
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 8 [ON]
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - Group A DNIS request handled
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 1 [ON]
[Jan 20 14:21:35] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 8 [OFF]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 1 [OFF]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - Sending DNIS digit 5
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 5 [ON]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - Group A DNIS request handled
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 1 [ON]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 5 [OFF]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 1 [OFF]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - Sending DNIS digit 5
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 5 [ON]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - Group A DNIS request handled
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 1 [ON]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 5 [OFF]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 1 [OFF]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - Sending DNIS digit 2
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 2 [ON]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - Group A DNIS request handled
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 1 [ON]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 2 [OFF]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 1 [OFF]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - Sending DNIS digit 6
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 6 [ON]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - Group A DNIS request handled
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 1 [ON]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 6 [OFF]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 1 [OFF]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - Sending DNIS digit 3
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 3 [ON]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - Group A DNIS request handled
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 1 [ON]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 3 [OFF]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 1 [OFF]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - Sending DNIS digit 4
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 4 [ON]
[Jan 20 14:21:36] DEBUG[3564] chan_dahdi.c: Chan 13 - Group A DNIS request handled
[Jan 20 14:21:37] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 3 [ON]
[Jan 20 14:21:37] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 4 [OFF]
[Jan 20 14:21:38] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 3 [OFF]
[Jan 20 14:21:38] DEBUG[3564] chan_dahdi.c: Chan 13 - Sending category National Subscriber
[Jan 20 14:21:38] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 1 [ON]
[Jan 20 14:21:38] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 4 [ON]
[Jan 20 14:21:38] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Tx >> 1 [OFF]
[Jan 20 14:21:38] DEBUG[3564] chan_dahdi.c: Chan 13 - MF Rx << 4 [OFF]
[Jan 20 14:21:38] VERBOSE[3564] chan_dahdi.c: Chan 13 - Far end disconnected. Reason: Network Congestion
[Jan 20 14:21:38] VERBOSE[3564] chan_dahdi.c: MFC/R2 call disconnected on channel 13
[Jan 20 14:21:38] VERBOSE[3564] app_dial.c: -- DAHDI/13-1 is circuit-busy
[Jan 20 14:21:38] DEBUG[3564] chan_dahdi.c: disconnecting MFC/R2 call on chan 13
[Jan 20 14:21:38] DEBUG[3564] chan_dahdi.c: ast cause 0 resulted in openr2 cause 6/Normal Clearing
[Jan 20 14:21:38] DEBUG[3564] chan_dahdi.c: Chan 13 - CAS Tx >> [CLEAR FORWARD] 0x08
[Jan 20 14:21:38] DEBUG[3564] chan_dahdi.c: Chan 13 - CAS Raw Tx >> 0x09
[Jan 20 14:21:38] VERBOSE[3564] chan_dahdi.c: -- Hungup 'DAHDI/13-1'
[Jan 20 14:21:38] VERBOSE[3564] app_dial.c: == Everyone is busy/congested at this time (1:0/1/0)
[Jan 20 14:21:38] VERBOSE[3564] pbx.c: -- Executing [s@macro-dialout-trunk:20] NoOp("SIP/420-00005995", "Dial failed for some reason with DIALSTATUS = CONGESTION and HANGUPCAUSE = 0") in new stack

[B]cat /etc/dahdi/system.conf[/B]
#For detailed Dahdi options, view /etc/dahdi/system.conf.bak
loadzone=mx
defaultzone=mx

#Sangoma A101 port 1 [slot:4 bus:2 span:1] <wanpipe1>
span=1,1,0,cas,hdb3
cas=1-15:1101
cas=17-31:1101

#Sangoma AFT-A200 [slot:0 bus:5 span:2] <wanpipe2>
fxsks=32
echocanceller=oslec,32
fxsks=33
echocanceller=oslec,33
fxsks=34
echocanceller=oslec,34
fxsks=35
echocanceller=oslec,35
fxsks=36
echocanceller=oslec,36
fxsks=37
echocanceller=oslec,37
fxsks=38
echocanceller=oslec,38
fxsks=39
echocanceller=oslec,39

[B]cat /etc/asterisk/chan_dahdi.conf[/B]
;autogenerated by /usr/sbin/wancfg_dahdi do not hand edit
;autogenrated on 2014-10-01
;Dahdi Channels Configurations
;For detailed Dahdi options, view /etc/asterisk/chan_dahdi.conf.bak

[trunkgroups]

[channels]
context=default
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
echotraining=800
relaxdtmf=yes
rxgain=4.0
txgain=6.0
group=1
callgroup=1
pickupgroup=1
immediate=no
;callerid = asreceived
;useincomingcalleridondahditransfer = yes

;Sangoma A101 port 1 [slot:4 bus:2 span:1] <wanpipe1>
signalling=mfcr2
mfcr2_variant=mx
mfcr2_get_ani_first=no
mfcr2_max_ani=10
mfcr2_max_dnis=4
mfcr2_category=national_subscriber
mfcr2_mfback_timeout=-1
mfcr2_metering_pulse_timeout=-1
; this is for debugging purposes
mfcr2_logdir=log
mfcr2_logging=all
; end debugging configuration
context=from-pstn
group=2
restrictcid=yes
hidecallerid=yes
channel => 1-15
channel => 17-31


;Sangoma AFT-A200 [slot:0 bus:5 span:2]  <wanpipe2>
context=from-zaptel
group=0
echocancel=yes
signalling = fxs_ks
channel => 32

context=from-zaptel
group=1
echocancel=yes
signalling = fxs_ks
channel => 33

context=from-zaptel
group=1
echocancel=yes
signalling = fxs_ks
channel => 34

context=from-zaptel
group=1
echocancel=yes
signalling = fxs_ks
channel => 35

context=from-zaptel
group=1
echocancel=yes
signalling = fxs_ks
channel => 36

context=from-zaptel
group=1
echocancel=yes
signalling = fxs_ks
channel => 37

context=from-zaptel
group=1
echocancel=yes
signalling = fxs_ks
channel => 38

context=from-zaptel
group=1
echocancel=yes
signalling = fxs_ks
channel => 39

De antemano agradezco su ayuda