1) when there is no audio from asterisk a strange "choppy" sound come from
the ISDN line or phone, this problem is deterministic, every time the a
sound is missing this sound come out.
I had this issue when dialing. It was resolved with this patch :
--- ../../visdn-head/chan_visdn/chan_visdn.c 2006-07-07
08:00:25.000000000 +0200
+++ chan_visdn.c 2006-07-15 17:28:35.000000000 +0200
@@ -1367,7 +1367,10 @@
switch(condition) {
case -1:
- ast_playtones_stop(ast_chan);
+ // ast_playtones_stop(ast_chan);
+ if (!visdn_chan->inband_info)
+ ast_tonepair_start(ast_chan, 0,0,0,0);
+ return res;
break;
case AST_CONTROL_RING:
2) at the NT side im not able to config a "simple switch", how is
possibile to do so? (simple switch is the "zaptel" switch -> ear a "dial"
tone (i need italian tone) and after digit the number and wait connection)
Use the extensions.conf.sample_passthru in samples. You're looking for exten
=> s,1,VISDNOverlapDial()
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