<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">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">
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>
--<br>
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</blockquote></div>