<div dir="ltr">Hello everybody, <div><br></div><div>I have an E1 (CANTV VENEZUELA) configured against an elastix appliance. Elastix version is 2.3 asterisk version is 1.8.17.0 and dahdi version is 2.4.1.2. Some calls are failing to go out, writing the "busy/congested" message into the log and sending the appropriate message back to the caller. I'm not sure why the calling is failing, I think all the outgoing channels in the E1 are getting busy, but when I check the logs, there are some errors and I'm not sure if is the regular way asterisk log when all channels in a E1 are busy or there is actually an error in the progress of the call.<div style>
<br></div><div style>Any help will be appreciated, right now I'm saving the output of the command mfcr2 show channels executed every two seconds to monitor if all the channels get busy together at any time during the day. Attached to this email is the log with the failing calls, this same behavior happens randomly with many other channels.</div>
<div style><br></div><div style><div>[Feb 1 09:50:20] DEBUG[12104] chan_dahdi.c: Chan 22 - Requested to make call (ANI=2748100, DNIS=04149898199, category=National Subscriber)</div><div>[Feb 1 09:50:20] DEBUG[12104] chan_dahdi.c: Chan 22 - Call started at Fri Feb 1 09:50:20 2013 on chan 22 [openr2 version 1.3.1, revision exported]</div>
<div>[Feb 1 09:50:20] DEBUG[12104] chan_dahdi.c: Chan 22 - Outgoing call proceeding: ANI=2748100, DNIS=04149898199, Category=National Subscriber</div><div>[Feb 1 09:50:20] DEBUG[12104] chan_dahdi.c: Chan 22 - CAS Tx >> [SEIZE] 0x00</div>
<div>[Feb 1 09:50:20] DEBUG[12104] chan_dahdi.c: Chan 22 - CAS Raw Tx >> 0x01</div><div>[Feb 1 09:50:20] VERBOSE[12104] app_dial.c: -- Called DAHDI/g3/04149898199</div><div>[Feb 1 09:50:20] DEBUG[12104] chan_dahdi.c: bits changed in chan 22</div>
<div>[Feb 1 09:50:20] DEBUG[12104] chan_dahdi.c: Chan 22 - Bits changed from 0x08 to 0x0C</div><div>[Feb 1 09:50:20] DEBUG[12104] chan_dahdi.c: Chan 22 - CAS Rx << [SEIZE ACK] 0x0C</div><div>[Feb 1 09:50:20] DEBUG[12104] chan_dahdi.c: Chan 22 - DTMF/R2 call acknowledge!</div>
<div>[Feb 1 09:50:21] DEBUG[12104] chan_dahdi.c: Chan 22 - calling timer 3 (start_dialing_dtmf) callback</div><div>[Feb 1 09:50:21] VERBOSE[12104] chan_dahdi.c: Chan 22 - Dialing 04149898199 with DTMF/R2 (tone on = 50, tone off = 100)</div>
<div>[Feb 1 09:50:22] DEBUG[12104] chan_dahdi.c: Chan 22 - Done with DTMF generation</div><div>[Feb 1 09:50:22] DEBUG[12104] chan_dahdi.c: Chan 22 - DTMF R2 call is done generating DTMF, forcing accept signal</div><div>
[Feb 1 09:50:22] VERBOSE[12104] chan_dahdi.c: MFC/R2 call has been accepted on forward channel 22</div><div>[Feb 1 09:50:22] VERBOSE[12104] app_dial.c: -- DAHDI/22-1 is ringing</div><div>[Feb 1 09:50:22] DEBUG[12104] chan_dahdi.c: Enqueuing progress frame after R2 accept in chan 22</div>
<div>[Feb 1 09:50:22] VERBOSE[12104] app_dial.c: -- DAHDI/22-1 is making progress passing it to SIP/116-000089f0</div><div>[Feb 1 09:50:23] DEBUG[12104] chan_dahdi.c: bits changed in chan 22</div><div>[Feb 1 09:50:23] DEBUG[12104] chan_dahdi.c: Chan 22 - Bits changed from 0x0C to 0x08</div>
<div>[Feb 1 09:50:23] DEBUG[12104] chan_dahdi.c: Chan 22 - CAS Rx << [0x08] 0x08</div><div>[Feb 1 09:50:23] ERROR[12104] chan_dahdi.c: Chan 22 - Protocol error. Reason = Invalid CAS, R2 State = Seize ACK Received, MF state = MF Engine Off, MF Group = Forwar$</div>
<div>DNIS = 04149898199, ANI = 2748100, MF = 0x20</div><div>[Feb 1 09:50:23] DEBUG[12104] chan_dahdi.c: Chan 22 - CAS Tx >> [IDLE] 0x08</div><div>[Feb 1 09:50:23] DEBUG[12104] chan_dahdi.c: Chan 22 - CAS Raw Tx >> 0x09</div>
<div>[Feb 1 09:50:23] ERROR[12104] chan_dahdi.c: MFC/R2 protocol error on chan 22: Invalid CAS</div><div>[Feb 1 09:50:23] VERBOSE[12104] chan_dahdi.c: -- Hungup 'DAHDI/22-1'</div><div>[Feb 1 09:50:23] VERBOSE[12104] app_dial.c: == Everyone is busy/congested at this time (1:0/0/1)</div>
<div>[Feb 1 09:50:23] VERBOSE[12104] pbx.c: -- Executing [s@macro-dialout-trunk:20] NoOp("SIP/116-000089f0", "Dial failed for some reason with DIALSTATUS = CHANUNAVAIL$</div><div>[Feb 1 09:50:23] VERBOSE[12104] pbx.c: -- Executing [s@macro-dialout-trunk:21] Goto("SIP/116-000089f0", "s-CHANUNAVAIL,1") in new stack</div>
<div><br></div></div><div style><br></div><div style><br></div><div style><br></div><div style><br></div>-- <br>Rafael A Angulo R<br>Director Gerente<br>Tarma Consultores C.A.<br>Cel. (58)(414)106.04.73<br>Ofi. (58)(212)793.49.81<br>
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