[asterisk-r2] seize without dial tone

[Gustavo Chavira]

Hi every one. I have a particular scenario.

Nortel BCM 400  -------- E1 (mfc/r2) ----------- Asterisk  ------- Telco


When I press 9 from any nortel extension, the BCM receive a dialtone and I
received the next message in the full log.

[Mar  4 19:39:30] DEBUG[3820] chan_dahdi.c: Chan 38 - Bits changed from
0x08 to 0x00
[Mar  4 19:39:30] DEBUG[3820] chan_dahdi.c: Chan 38 - CAS Rx << [SEIZE] 0x00
[Mar  4 19:39:30] DEBUG[3820] chan_dahdi.c: Chan 38 - Call started at Mon
Mar  4 19:39:30 2013 on chan 38 [openr2 version 1.3.1, revision exported]
[Mar  4 19:39:30] DEBUG[3820] chan_dahdi.c: Chan 38 - Initialized R2 MF
detector
[Mar  4 19:39:30] DEBUG[3820] chan_dahdi.c: Chan 38 - CAS Tx >> [SEIZE ACK]
0x0C
[Mar  4 19:39:30] DEBUG[3820] chan_dahdi.c: Chan 38 - CAS Raw Tx >> 0x0D
[Mar  4 19:39:30] VERBOSE[3820] chan_dahdi.c: New MFC/R2 call detected on
chan 38.

after this log, the call continues correctly . The problem is when the BCM
want's to take a seize and the next channel in the hunt group is busy. When
this happens I just receive something like this:

VERBOSE[3921] chan_dahdi.c: New MFC/R2 call detected on chan 40.

and there is not  dial tone. I just listen a silence. And I can't process
the call. I have to hung up and try again.

I think that chan_dahdi doesn't inform to the BCM the channel status. Any
Ideas?

My config is the next:

# Span 1: TE2/0/1 "T2XXP (PCI) Card 0 Span 1" (MASTER) TELMEX
span=1,1,0,cas,hdb3
# termtype: te
cas=1-15:1101
cas=17-31:1101
echocanceller=oslec,1-15,17-31

# Span 2: TE2/0/2 "T2XXP (PCI) Card 0 Span 2" NORTEL BCM
span=2,0,0,cas,hdb3
# termtype: te
cas=32-46:1101
cas=48-62:1101
echocanceller=oslec,32-46,48-62

# Global data

loadzone    = us
defaultzone    = us

*dahdi_channels.conf*

context=to-nortel
signalling=mfcr2
mfcr2_variant=mx
mfcr2_get_ani_first=yes
mfcr2_max_ani=10
mfcr2_max_dnis=15
mfcr2_category=national_subscriber
mfcr2_metering_pulse_timeout=-1
mfcr2_advanced_protocol_file=/etc/openr2/r2proto.conf
rxgain=0.0
txgain=0.0
mfc2_logging=all
group=0
channel => 1-15,17-20


; Span 1: WCT1/0 "Nortel"
context=from-nortel
signalling=mfcr2
mfcr2_variant=mx
mfcr2_get_ani_first=yes
mfcr2_max_ani=10
mfcr2_max_dnis=15
mfcr2_category=national_subscriber
mfcr2_metering_pulse_timeout=-1
mfcr2_mfback_timeout=-1
mfcr2_advanced_protocol_file=/etc/openr2/r2proto-nortel.conf
rxgain=0.0
txgain=0.0
mfcr2_logging=all
mfcr2_call_files=yes
loglevel=error,warning,debug,notice,cas,mfgroup=1
group=1
channel => 32-46,48-62


*my r2proto-nortel.conf:*



# Group II tones
*mf_g2_tones.national_subscriber=1*

# Timers in milliseconds
# Use -1 to leave default, or just comment it out for that matter
*timers.mf_back_cycle=3500*



I appreciate any help!! Thaks


-- 
Ing. Gustavo Chavira Valle
(Digium Certified Asterisk Professional)
Electrosystems S de RL de CV
Tel (656) 623-0794
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