The first and second times were sufficient. On 26 Mar 2009, at 19:24, Harry Vangberg wrote:
> Okay. Trying third time, sorry for that, might just be my mail client, > anyways, from voip-info.org: > > "RED: Loss of signal (LOS): The equipment shall assume "loss of > signal" when the incoming signal amplitude is, for a time duration of > at least 1 ms, more than 20 dB below the nominal amplitude. The > equipment shall react within 12 ms by issuing AIS." > > This sounds like what is happening, and is in order with what one of > the technicians said - I was about 20 dB below their amplitude, theirs > being 2048. Does this make *any* sense? > > > 2009/3/26 Harry Vangberg <[email protected]>: >> Hey, >> >> I wrote yesterday about PRI dropping, which turned out to just be a >> regular reset of unused B-channels. This time there's a real issue. >> As >> noted earlier I have an ISDN-30 connection, a Digium TE-121 with >> VPMADT032 echo cancellation. These are my configurations files: >> >> == /etc/zaptel.conf >> loadzone=dk >> defaultzone=dk >> >> span=1,1,0,css,hdb3,crc4 >> bchan=1-15 >> dchan=16 >> bchan=17-31 >> == >> >> == /etc/asterisk/zapata.conf >> [channels] >> switchtype=euroisdn >> usecallerid=yes >> >> group=1 >> signalling=pri_cpe >> context=incoming >> channel=>1-15 >> channel=>17-31 >> == >> >> The Asterisk console has this (repeating for every channel): >> >> [Mar 26 18:39:19] WARNING[3772]: chan_zap.c:6685 handle_init_event: >> Detected alarm on channel 1: Red Alarm >> [Mar 26 18:39:19] WARNING[3772]: chan_zap.c:1471 zt_disable_ec: >> Unable >> to disable echo cancellation on channel 1 >> [Mar 26 18:39:19] WARNING[3772]: chan_zap.c:6685 handle_init_event: >> Detected alarm on channel 2: Red Alarm >> [Mar 26 18:39:19] WARNING[3772]: chan_zap.c:1471 zt_disable_ec: >> Unable >> to disable echo cancellation on channel 2 >> ... >> ... >> [Mar 26 18:39:19] NOTICE[3771]: chan_zap.c:8486 pri_dchannel: PRI got >> event: Alarm (4) on Primary D-channel of span 1 >> [Mar 26 18:39:19] WARNING[3771]: chan_zap.c:2401 pri_find_dchan: No >> D-channels available! Using Primary channel 16 as D-channel anyway! >> [Mar 26 18:39:24] NOTICE[3771]: chan_zap.c:8486 pri_dchannel: PRI got >> event: No more alarm (5) on Primary D-channel of span 1 >> [Mar 26 18:39:24] NOTICE[3772]: chan_zap.c:6678 handle_init_event: >> Alarm cleared on channel 1 >> [Mar 26 18:39:24] NOTICE[3772]: chan_zap.c:6678 handle_init_event: >> Alarm cleared on channel 2 >> ... >> ... >> >> See the full output at http://sprunge.us/cdFf >> >> I enabled PRI debugging for span 1, which gives this: >> >> q921.c:709 q921_reset: q921_state now is >> Q921_LINK_CONNECTION_RELEASED >> Sending Set Asynchronous Balanced Mode Extended >> q921.c:150 q921_send_sabme: q921_state now is Q921_AWAITING_ESTABLISH >> -- Got UA from network peer Link up. >> q921.c:709 q921_reset: q921_state now is >> Q921_LINK_CONNECTION_RELEASED >> q921.c:664 q921_dchannel_up: q921_state now is >> Q921_LINK_CONNECTION_ESTABLISHED >> q931.c:2755 q931_restart: call 32768 on channel 1 enters state 62 >> (Restart) >>> Protocol Discriminator: Q.931 (8) len=13 >>> Call Ref: len= 2 (reference 0/0x0) (Originator) >>> Message type: RESTART (70) >>> [18 03 a9 83 81] >>> Channel ID (len= 5) [ Ext: 1 IntID: Implicit PRI Spare: 0 >>> Exclusive Dchan: 0 >>> ChanSel: Reserved >>> Ext: 1 Coding: 0 Number Specified Channel >>> Type: 3 >>> Ext: 1 Channel: 1 ] >>> [79 01 80] >>> Restart Indentifier (len= 3) [ Ext: 1 Spare: 0 Resetting >>> Indicated Channel (0) ] >> < Protocol Discriminator: Q.931 (8) len=13 >> < Call Ref: len= 2 (reference 0/0x0) (Terminator) >> < Message type: RESTART ACKNOWLEDGE (78) >> < [18 03 a1 83 81] >> < Channel ID (len= 5) [ Ext: 1 IntID: Implicit PRI Spare: 0 >> Preferred Dchan: 0 >> < ChanSel: Reserved >> < Ext: 1 Coding: 0 Number Specified >> Channel Type: 3 >> < Ext: 1 Channel: 1 ] >> < [79 01 80] >> < Restart Indentifier (len= 3) [ Ext: 1 Spare: 0 Resetting >> Indicated >> Channel (0) ] >> -- Processing IE 24 (cs0, Channel Identification) >> -- Processing IE 121 (cs0, Restart Indicator) >> q931.c:3581 q931_receive: call 32768 on channel 1 enters state 0 >> (Null) >> q931.c:2755 q931_restart: call 32768 on channel 2 enters state 62 >> (Restart) >>> Protocol Discriminator: Q.931 (8) len=13 >>> Call Ref: len= 2 (reference 0/0x0) (Originator) >>> Message type: RESTART (70) >>> [18 03 a9 83 82] >>> Channel ID (len= 5) [ Ext: 1 IntID: Implicit PRI Spare: 0 >>> Exclusive Dchan: 0 >>> ChanSel: Reserved >>> Ext: 1 Coding: 0 Number Specified Channel >>> Type: 3 >>> Ext: 1 Channel: 2 ] >>> [79 01 80] >>> Restart Indentifier (len= 3) [ Ext: 1 Spare: 0 Resetting >>> Indicated Channel (0) ] >> < Protocol Discriminator: Q.931 (8) len=13 >> < Call Ref: len= 2 (reference 0/0x0) (Terminator) >> < Message type: RESTART ACKNOWLEDGE (78) >> < [18 03 a1 83 82] >> < Channel ID (len= 5) [ Ext: 1 IntID: Implicit PRI Spare: 0 >> Preferred Dchan: 0 >> < ChanSel: Reserved >> < Ext: 1 Coding: 0 Number Specified >> Channel Type: 3 >> < Ext: 1 Channel: 2 ] >> < [79 01 80] >> < Restart Indentifier (len= 3) [ Ext: 1 Spare: 0 Resetting >> Indicated >> Channel (0) ] >> -- Processing IE 24 (cs0, Channel Identification) >> -- Processing IE 121 (cs0, Restart Indicator) >> >> Again, full output at http://sprunge.us/EcTA >> >> I even tried swapping the card with a spare TE121 I have. Exactly >> same >> error, so I don't think it's an hardware issue. I also have had two >> different telco guys out, both said the connection was fine, but one >> mentioned something about me being out of 'stroke'/sync - they're >> running at a 2048Mb frequency, I was some 20 below. He didn't explain >> too good. >> >> Any help appreciated. >> > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
