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<TITLE>Getting confused on signalling mode Vs framing and encoding: T1 CAS </TITLE>
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<P><FONT SIZE=2 FACE="Arial">Hello,</FONT>
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<P><FONT SIZE=2 FACE="Arial">I'm trying to make my asterisk box to act as a telco, in order to reproduce a US environment in europe.</FONT>
<BR><FONT SIZE=2 FACE="Arial">Our telco provider is giving us those settings:</FONT>
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<P><FONT SIZE=2 FACE="Arial">ESF</FONT>
<BR><FONT SIZE=2 FACE="Arial">B8ZF</FONT>
<BR><FONT SIZE=2 FACE="Arial">Inbound = E&M Immediate</FONT>
<BR><FONT SIZE=2 FACE="Arial">Outbound sig =Wink Start</FONT>
<BR><FONT SIZE=2 FACE="Arial">Yield to Glare = Yes</FONT>
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<P><FONT SIZE=2 FACE="Arial">Those trunks are using CAS for signaling.</FONT>
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<P><FONT SIZE=2 FACE="Arial">I have tried many configs/combinations in zaptel.conf and zapata-channels.conf</FONT>
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<P><FONT SIZE=2 FACE="Arial">In zaptel.conf, when having something like</FONT>
<BR><FONT SIZE=2 FACE="Arial">span=5,0,0,cas,b8zs</FONT>
<BR><FONT SIZE=2 FACE="Arial">and in zapata-channels something like </FONT>
<BR><FONT SIZE=2 FACE="Arial">signalling=featb</FONT>
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<P><FONT SIZE=2 FACE="Arial">I end-up in the log file with something like</FONT>
<BR><FONT SIZE=2 FACE="Arial">chan_zap.c: Got hook complete in MF FGD, waiting for wink now on channel 125</FONT>
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<P><FONT SIZE=2 FACE="Arial">If in zaptel.conf I put something like </FONT>
<BR><FONT SIZE=2 FACE="Arial">span=5,0,0,esf,b8zs</FONT>
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<P><FONT SIZE=2 FACE="Arial">My call is immediatly stopped:</FONT>
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<P><FONT SIZE=2 FACE="Arial">Jan 24 17:17:33 DEBUG[25076] chan_zap.c: Got event On hook(1) on channel 125 (index 0)</FONT>
<BR><FONT SIZE=2 FACE="Arial">Jan 24 17:17:33 DEBUG[25076] channel.c: Didn't get a frame from channel: Zap/125-1</FONT>
<BR><FONT SIZE=2 FACE="Arial">Jan 24 17:17:33 DEBUG[25076] channel.c: Bridge stops bridging channels SIP/2707-0083be10 and Zap/125-1</FONT>
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<P><FONT SIZE=2 FACE="Arial">What is the correct zaptel.conf for my case ?</FONT>
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<P><FONT SIZE=2 FACE="Arial">If I specify esf in zaptel.conf, where do I mention I do CAS for RBS ?</FONT>
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<P><FONT SIZE=2 FACE="Arial">Thanks.</FONT>
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<P><FONT SIZE=2 FACE="Arial">V.Thinselin</FONT>
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