I have set up asterisk on a Debian box several times now, trying different configurations. I still get the same horrendous crackle, static and echo from phoens. I have not tried external calls yet. I need to solve the internal extension problem when calling SIP to SIP. I do have a TDM03B.
Here is my zapata.conf:
[trunkgroups] [channels] language=en context=default ;signalling=fxs_ks usecallerid=yes hidecallerid=yes callwaiting=no ;sendcalleridafter=1 callwaitingcallerid=yes threewaycalling=yes transfer=yes canpark=yes echocancel=yes rxgain=3.0 txgain=3.0 group=1 callgroup=1 pickupgroup=1 cidsignalling=v23 ; Added for UK CLI detection cidstart=polarity ; Added for UK CLI detection immediate=yes ;faxdetect=both ;faxdetect=incoming ;faxdetect=outgoing ;faxdetect=no ;musiconhold=default channel => 2-4
And here is my sip.conf:
[general] context=default bindport=5060 bindaddr=0.0.0.0 disallow=all allow=ulaw allow=alaw  type=friend context=local callerid=myfriend1 host=dynamic secret=6001 dtmfmode=inband mailbox=6001  type=friend context=local callerid=myfriend2 host=dynamic secret=6002 dtmfmode=inband mailbox=6002  type=friend context=local callerid=myfriend3 host=dynamic secret=6003 dtmfmode=inband mailbox=6003
All the phones are Sipura 841’s.
The kernel I am using is 2.6.8-2-686
on a Dell PowerEdge 800 with 1 GB of ram.
I am in the UK
Please can someone help me here. I have not got a clue where I am going wrong and starting to think that this investment was a bad idea!!!