<p>Same for E1 as well unless your operator is giving mfcr2 on cas.</p>
<p>Mitul</p>
<div class="gmail_quote">On Jul 26, 2012 9:17 AM, "Jorge Mendoza" <<a href="mailto:jmendozat@tcc.com.pe">jmendozat@tcc.com.pe</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div style="font-size:12pt;font-family:arial,helvetica,sans-serif">Thank you Mitul for your answer.<br>Yes, we have tested e&m before and it works. But I don't know why. That is what I don't understand. You said that E&M signalling does not have separate signalling channel, that is true for the T1 but not for E1. My understanding is that E1 CAS pass the E&M information in the bits abcd of channel 16, the signalling channel.<br>
Regards<br>--<br>Jorge Mendoza<br><br><hr><div style="font-size:12pt;font-style:normal;font-family:Helvetica,Arial,sans-serif;text-decoration:none;font-weight:normal"><b>From: </b>"Mitul Limbani" <<a href="mailto:mitul@enterux.in" target="_blank">mitul@enterux.in</a>><br>
<b>To: </b>"Asterisk Users Mailing List - Non-Commercial Discussion" <<a href="mailto:asterisk-users@lists.digium.com" target="_blank">asterisk-users@lists.digium.com</a>><br><b>Sent: </b>Wednesday, 25 July, 2012 8:15:25 PM<br>
<b>Subject: </b>Re: [asterisk-users] Dahdi+Redfone+Channel Bank+E&M<br><br><p>E&M signalling do not have seperate signalling channel.</p>
<p>Configure as e&m=1-31</p>
<p>Mitul</p>
<div class="gmail_quote">On Jul 26, 2012 6:40 AM, "Jorge Mendoza" <<a href="mailto:jmendozat@tcc.com.pe" target="_blank">jmendozat@tcc.com.pe</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
We are trying to connect an Asterisk server with a Channel Bank with E&M interfaces using a RedFone TDMoE device.<br>
The CB have a E1 CAS interface.<br>
OS: Ubuntu Server 11.10 64 bits<br>
dahdi: dahdi-linux-complete-2.6.1+2.6.1<br>
<br>
Redfone configuration:<br>
/etc/redfone.conf<br>
<br>
[span1]<br>
framing=cas<br>
encoding=hdb3<br>
<br>
System configuration:<br>
/etc/dahdi/system.conf<br>
<br>
dynamic=ethmf,eth0/00:50:c2:65:e0:64/0,31,1<br>
dynamic=ethmf,eth0/00:50:c2:65:e0:64/1,31,0<br>
<br>
e&me1=1-15,17-31<br>
dchan=16<br>
<br>
alaw=1-31<br>
<br>
loadzone = fr<br>
defaultzone = fr<br>
<br>
Error message:<br>
========================================================<br>
# dahdi_cfg -vvvvv<br>
<br>
Changing signalling on channel 1 from Unused to E & M E1<br>
Changing law on channel 1 from Mu-law to A-law<br>
DAHDI_CHANCONFIG failed on channel 1: Invalid argument (22)<br>
Selected signaling not supported<br>
Possible causes:<br>
e&me1 signaling is being used on a T1 line (use e&m)<br>
RBS signaling is being used on a E1 CCS span<br>
Signaling is being assigned to channel 16 of an E1 CAS span<br>
=========================================================<br>
<br>
I don't understand the last possible cause mentioned: "Signaling is being assigned to channel 16 of an E1 CAS span", because the dchan is channel 16.<br>
Where is the error?<br>
Thank you.<br>
--<br>
Jorge Mendoza<br>
<br>
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