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 [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
