Thanks for your answer, Bruno. However, the configuration you provided is for an E1 connection and we are using a T1, having channel 23 as D channel.<BR><BR><B><I>Bruno De Luca <bdeluca@fgasoftware.com></I></B> escreveu: <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">d-channel is in midle <BR><BR>bchan=1-15,17-31<BR>dchan=16<BR>loadzone = it<BR>defaultzone = it<BR><BR><BR><BR><BR>Kanelbullar wrote: <BLOCKQUOTE cite=mid20070320121134.11493.qmail@web26501.mail.ukl.yahoo.com type="cite"> <DIV>Hi guys,</DIV> <DIV> </DIV> <DIV>We are experiencing a problem with a T1 PRI connection. After trying a number of variations in the configuration files, the behavior is always the same: no B channels come up and the D channel doesn't appear to be working well. We can see there are AT&T Maintenance messages being exchanged by asterisk and the provider, CONNECT and CONNECT ACKNOWLEDGE, but that doesn't appear to be
enough to bring the D and B channels properly up. Are there any messages missing? When we attempt to make a call, we can see the Q.931 SETUP message being sent. But shortly after we are getting a LAPD DISC message, which ends up originating a Q.931 DISCONNECT message, terminating the call. </DIV> <DIV> </DIV> <DIV>What could be the problem here? </DIV> <UL> <LI>Could there be any configuration issue on our side? </LI> <LI>Does libpri provide complete support to the AT&T Maintenance protocol or could this connection be incompatible?</LI></UL> <DIV> </DIV> <DIV>Any help would be highly appreciated.</DIV> <DIV> </DIV> <DIV>Many thanks in advance,<BR>Paulo</DIV> <DIV> </DIV> <DIV>----------------------------------------------------------------<BR>PS: Configuration files, messages and pri debug snippets follow</DIV> <DIV> </DIV> <DIV>zaptel.conf<BR>----------------<BR>loadzone = us<BR>defaultzone=us<BR>#Span 1: TE2/0/1 "T2XXP (PCI) Card
0 Span 1" PRI_T1<BR>span=1,0,0,esf,b8zs,crc4<BR>bchan=1-23<BR>dchan=24</DIV> <DIV> </DIV> <DIV>zapata.conf<BR>----------------<BR>[channels]<BR>group = 0<BR>usecallingpres = yes<BR>switchtype = national <BR>context = inbound<BR>signalling = pri_cpe <BR>usecallerid = yes<BR>channel = 1-23</DIV> <DIV><BR>messages<BR>--------------<BR>Mar 19 15:32:23 NOTICE[3306] cdr.c: CDR logging disabled, data will be lost.<BR>Mar 19 15:32:23 WARNING[3306] pbx_ael.c: Unable to open '/etc/asterisk/extensions.ael': No such file or directory<BR>Mar 19 15:32:23 WARNING[3306] pbx.c: Requested contexts didn't get merged<BR>Mar 19 15:33:17 WARNING[3322] chan_zap.c: No D-channels available! Using Primary channel 24 as D-channel anyway!<BR>Mar 19 15:33:58 WARNING[3322] chan_zap.c: No D-channels available! Using Primary channel 24 as D-channel anyway!<BR>Mar 19 15:33:58 WARNING[3366] app_dial.c: Unable to forward voice</DIV> <DIV>[...]</DIV> <DIV> </DIV> <DIV>pri
debug span<BR>----------------------<BR>> [ 00 01 0a 0a 03 01 00 07 01 01 c0 18 01 ac ]</DIV> <DIV>> Informational frame:<BR>> SAPI: 00 C/R: 0 EA: 0<BR>> TEI: 000 EA: 1<BR>> N(S): 005 0: 0<BR>> N(R): 005 P: 0<BR>> 10 bytes of data<BR>-- Restarting T203 counter<BR>Stopping T_203 timer<BR>Starting T_200 timer<BR>> Protocol Discriminator: AT&T Maintenance (3) len=10<BR>> Call Ref: len= 1 (reference 0/0x0) (Originator)<BR>> Message type: CONNECT (7)<BR>> [01 01 c0]<BR>> IE: Change Status (len = 3)<BR>> [18 01 ac]<BR>> Channel ID (len= 3) [ Ext: 1 IntID: Implicit, PRI Spare: 0, Exclusive Dchan: 1<BR>> ChanSel: As indicated in following
octets<BR> ]<BR>(...)<BR>< [ 02 01 0a 0c 03 01 00 0f 01 01 c0 18 01 ac ]</DIV> <DIV>< Informational frame:<BR>< SAPI: 00 C/R: 1 EA: 0<BR>< TEI: 000 EA: 1<BR>< N(S): 005 0: 0<BR>< N(R): 006 P: 0<BR>< 10 bytes of data<BR>-- ACKing all packets from 5 to (but not including) 6<BR>-- Since there was nothing left, stopping T200 counter<BR>-- Stopping T203 counter since we got an ACK<BR>-- Nothing left, starting T203 counter<BR>< Protocol Discriminator: AT&T Maintenance (3) len=10<BR>< Call Ref: len= 1 (reference 0/0x0) (Originator)<BR>< Message type: CONNECT ACKNOWLEDGE (15)<BR>< [01 01 c0]<BR>< IE: Change Status (len = 3)<BR>< [18 01 ac]<BR>< Channel ID (len= 3) [ Ext: 1 IntID: Implicit, PRI Spare: 0,
Exclusive Dchan: 1<BR>< ChanSel: As indicated in following octets<BR> ]</DIV> <DIV>(...)<BR>> Protocol Discriminator: Q.931 (8) len=40<BR>> Call Ref: len= 2 (reference 2/0x2) (Originator)<BR>> Message type: SETUP (5)<BR>> [04 03 80 90 a2]<BR>> Bearer Capability (len= 5) [ Ext: 1 Q.931 Std: 0 Info transfer capability: Speech (0)<BR>> Ext: 1 Trans mode/rate: 64kbps, circuit-mode
(16)<BR>> Ext: 1 User information layer 1: u-Law (34)<BR>> [18 03 a9 83 82]<BR>> Channel ID (len= 5) [ Ext: 1 IntID: Implicit, PRI Spare: 0, Exclusive Dchan: 0<BR>> ChanSel: Reserved<BR>> Ext: 1 Coding: 0 Number Specified Channel Type: 3<BR>> Ext: 1 Channel: 2 ]<BR>> [1e 02 80 83]<BR>> Progress Indicator (len= 4) [ Ext: 1 Coding:
CCITT (ITU) standard (0) 0: 0 Location: User (0)<BR>> Ext: 1 Progress Description: Calling equipment is non-ISDN. (3) ]<BR>> [6c 06 21 80 37 31 30 30]<BR>> Calling Number (len= 8) [ Ext: 0 TON: National Number (2) NPI: ISDN/Telephony Numbering Plan (E.164/E.163) (1)<BR>> Presentation: Presentation permitted, user number not screened (0) '7100' ]<BR>> [70 0b a1 35 38 35 34 31 39 37 39 39 35]<BR>> Called Number (len=13) [ Ext: 1 TON: National Number (2) NPI: ISDN/Telephony Numbering Plan (E.164/E.163) (1) '5854197995' ]<BR>(...)</DIV> <DIV>< [ 02 01 53 ]</DIV> <DIV>< Unnumbered
frame:<BR>< SAPI: 00 C/R: 1 EA: 0<BR>< TEI: 000 EA: 1<BR>< M3: 2 P/F: 1 M2: 0 11: 3 [ DISC (disconnect) ]<BR>< 0 bytes of data<BR>-- Got Disconnect from peer.<BR>Sending Unnumbered Acknowledgement</DIV> <DIV>> [ 02 01 73 ]</DIV> <DIV>> Unnumbered frame:<BR>> SAPI: 00 C/R: 1 EA: 0<BR>> TEI: 000 EA: 1<BR>> M3: 3 P/F: 1 M2: 0 11: 3 [ UA (unnumbered acknowledgement) ]<BR>> 0 bytes of data<BR>-- Restarting T203 counter</DIV> <DIV>> [ 00 01 00 00 08 02 00 02 45 08 02 81 90 ]</DIV> <DIV>> Informational frame:<BR>> SAPI: 00 C/R: 0 EA: 0<BR>> TEI: 000 EA: 1<BR>> N(S): 000 0: 0<BR>> N(R): 000 P: 0<BR>> 9 bytes of data<BR>Starting T_200 timer<BR>> Protocol Discriminator: Q.931
(8) len=9<BR>> Call Ref: len= 2 (reference 2/0x2) (Originator)<BR>> Message type: DISCONNECT (69)<BR>> [08 02 81 90]<BR>> Cause (len= 4) [ Ext: 1 Coding: CCITT (ITU) standard (0) 0: 0 Location: Private network serving the local user (1)<BR>> Ext: 1 Cause: Unknown (16), class = Normal Event (1) ]<BR></DIV> <div>__________________________________________________<BR>Fale com seus amigos de graça com o novo Yahoo! Messenger <BR><A class=moz-txt-link-freetext href="http://br.messenger.yahoo.com/">http://br.messenger.yahoo.com/</A> </div><PRE wrap=""><HR width="90%" SIZE=4> _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: <A class=moz-txt-link-freetext
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