Hi all- HELP! This is actually a revisit of a problem that I had earlier with E400P's at a customer site. Customer still gets locked up channel problem, but has learned to live with it (channels clear themselves after several minutes). The symptoms, which I believe are directly related: I'm having problems with tons of framing and "read" errors on my E1 connections (and occasional stuck channels) when I run a very simple IVR script under anything other than light load. Previously, I had thought this problem related to my customer's PBX connections (Nortel DMS100), but in the last week I've had the opportunity to work in-house with a couple of TE410P's, with one span making calls to another on the same machine. I have two simple scripts running under the dialplan. On span 1, I simply answer each call, play a short message, and hang up. On span 2, I run a Perl script that formats and drops calls (into /var/spool/asterisk/outgoing) for all channels at staggered times. These calls are simple outgoing calls that dial a number, wait 2 seconds, and hangup. After a few seconds, each call repeats. I can run this scenario on up to 10 channels at once with *no errors*. Above 10 channels, I start to get many (several per second when running 30 channels) framing and "read" errors, with text similar to the following: WARNING[1167272128]: File chan_zap.c, Line 5670 (zt_pri_error): PRI: !! Got reject for frame 26, retransmitting frame 26 now, up_dating n_r! (repeating for each error several times, with ascending retransmitted frame numbers) and also, less often: WARNING[1167272128]: File chan_zap.c, Line 5670 (zt_pri_error): PRI: Read on NN failed: Unknown error 500 (NN is the channel) MY SETUP: Tyan S2723, with dual Xeon's running at 2.4 GHz, 1MB memory Redhat 9 Two TE410P's, spans set for E1. Problem happens between spans on different boards, or spans on the same board. Sending board setup in zaptel.conf, for example: span=2,1,0,ccs,hdb3 (adding crc4 makes no difference) Recving board setup in zaptel.conf, for example: span=1,0,0,ccs,hdb3 " " In zapata.conf, sender is "pri_net" and receiver is "pri_cpe" QUESTIONS: ANYONE: Has anyone else experienced these framing problems in any scenario, and if so, what did you do about it please? FOR THE ISDN GURU's: What exactly does the framing error indicate? THANKS IN ADVANCE FOR HELPING ME SOLVE THIS LOAD_RELATED PROBLEM. Scott M. Stingel Emerging Voice Technology Inc. Palo Alto, California and London, England URL: www.evtmedia.com
I've made some updates that may help alleviate these problems on TE410P on E1. I'd like you to test and tell me if that helps. Also, I'd like you to confirm that you are using neither serial console nor frame buffer (graphical) console. Mark On Thu, 20 Nov 2003, Scott Stingel wrote:> Hi all- > > HELP! > > This is actually a revisit of a problem that I had earlier with E400P's at a > customer site. Customer still gets locked up channel problem, but has > learned to live with it (channels clear themselves after several minutes). > The symptoms, which I believe are directly related: > > I'm having problems with tons of framing and "read" errors on my E1 > connections (and occasional stuck channels) when I run a very simple IVR > script under anything other than light load. Previously, I had thought this > problem related to my customer's PBX connections (Nortel DMS100), but in the > last week I've had the opportunity to work in-house with a couple of > TE410P's, with one span making calls to another on the same machine. > > I have two simple scripts running under the dialplan. On span 1, I simply > answer each call, play a short message, and hang up. On span 2, I run a > Perl script that formats and drops calls (into /var/spool/asterisk/outgoing) > for all channels at staggered times. These calls are simple outgoing calls > that dial a number, wait 2 seconds, and hangup. After a few seconds, each > call repeats. > > I can run this scenario on up to 10 channels at once with *no errors*. > Above 10 channels, I start to get many (several per second when running 30 > channels) framing and "read" errors, with text similar to the following: > > WARNING[1167272128]: File chan_zap.c, Line 5670 (zt_pri_error): PRI: !! Got > reject for frame 26, retransmitting frame 26 now, up_dating n_r! > (repeating for each error several times, with ascending retransmitted frame > numbers) > > and also, less often: > WARNING[1167272128]: File chan_zap.c, Line 5670 (zt_pri_error): PRI: Read on > NN failed: Unknown error 500 (NN is the channel) > > MY SETUP: > Tyan S2723, with dual Xeon's running at 2.4 GHz, 1MB memory > Redhat 9 > Two TE410P's, spans set for E1. Problem happens between spans on different > boards, or spans on the same board. > Sending board setup in zaptel.conf, for example: span=2,1,0,ccs,hdb3 > (adding crc4 makes no difference) > Recving board setup in zaptel.conf, for example: span=1,0,0,ccs,hdb3 " " > > In zapata.conf, sender is "pri_net" and receiver is "pri_cpe" > > QUESTIONS: > ANYONE: Has anyone else experienced these framing problems in any scenario, > and if so, what did you do about it please? > > FOR THE ISDN GURU's: What exactly does the framing error indicate? > > THANKS IN ADVANCE FOR HELPING ME SOLVE THIS LOAD_RELATED PROBLEM. > > Scott M. Stingel > Emerging Voice Technology Inc. > Palo Alto, California and London, England > > URL: www.evtmedia.com > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users >
(Apologies: starting this as a new thread - I'm in a new location.) Mark- Ran latest CVS from today, and sorry to report little improvement with the changes you made. Running my IVR load test from one span to another on same system. I'm initiating calls on the 2nd span, these are channels 32-62 (skipping the D channel 47), and receiving on the cooresponding channels on the 1st span, channels 1-31 (D channel is 16). When I run these 30 channels, I get hundreds of WARNING's (excerpt below). I'm using a short crossover cable (1,2 <=> 4,5) When I run only 10-15 channels, I get few or no WARNING's... Note read error on channel 252(?) Why is asterisk retransmitting so many frames on each error? These symptoms are identical to those that I've been getting from my customer in the field, while connected to a DMS-100, handling real traffic. THANKS Scott WARNING[1167272128]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: Read on 252 failed: Unknown error 500 WARNING[1167272128]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: Read on 252 failed: Unknown error 500 WARNING[1167272128]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: Read on 252 failed: Unknown error 500 WARNING[1167272128]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: Read on 252 failed: Unknown error 500 WARNING[1175660608]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: Read on 253 failed: Unknown error 500 WARNING[1167272128]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: Read on 252 failed: Unknown error 500 WARNING[1175660608]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: Read on 253 failed: Unknown error 500 WARNING[1175660608]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: !! Got reject for frame 97, retransmitting frame 97 now, updating n_r! WARNING[1175660608]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: !! Got reject for frame 97, retransmitting frame 98 now, updating n_r! WARNING[1175660608]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: !! Got reject for frame 97, retransmitting frame 99 now, updating n_r! WARNING[1175660608]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: !! Got reject for frame 97, retransmitting frame 100 now, updating n_r! WARNING[1175660608]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: !! Got reject for frame 97, retransmitting frame 101 now, updating n_r! WARNING[1175660608]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: !! Got reject for frame 97, retransmitting frame 102 now, updating n_r! WARNING[1175660608]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: !! Got reject for frame 97, retransmitting frame 103 now, updating n_r! WARNING[1175660608]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: !! Got reject for frame 97, retransmitting frame 104 now, updating n_r! WARNING[1175660608]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: !! Got reject for frame 97, retransmitting frame 105 now, updating n_r! WARNING[1175660608]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: !! Got reject for frame 97, retransmitting frame 106 now, updating n_r! WARNING[1175660608]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: !! Got reject for frame 97, retransmitting frame 107 now, updating n_r! WARNING[1167272128]: File chan_zap.c, Line 5716 (zt_pri_error): PRI: Read on 252 failed: Unknown error 500 ------------------------------------------------------------------- Scott M. Stingel Emerging Voice Technology Inc. Palo Alto, California and London, England URL: www.evtmedia.com