We've got this configuration :
Cisco as5400 --- asterisk main server ---- asterisk for cells ---- gsm
gateway
cisco and the gsm gateway are connected to asterisk via sip, the two
asterisk servers are connected via iax.
On a succesful call the cisco (not always, 60% of the times) will keep
sending a ringtone to the connected phone, even if the call is answered,
actually if the user behind the cisco talks the one after the gsm
gateway will hear him, but not the contrary.
(like when you have a problem with nat, plus the "I'm still hearing the
ringingtone" problem)
((no, cisco is on a public IP, also the two asterisk servers, and all
sip is canreinvite=no)
the dial chain is something like :
asterisk main server:
[cisco context]
X.,1,Dial(iax/[EMAIL PROTECTED] for cells)
asterisk for cells:
[cisco context]
X.,1,Dial(sip/[EMAIL PROTECTED] gateway)
If the main server dialplan becomes like :
[cisco context]
X.,1,Answer
X.,n,Dial(iax/[EMAIL PROTECTED] for cells)
the problem is solved, but all the calls are seen as answered by the
cisco (well, they are) and this is not good for billing purposes.
(the 'asterisk for cell' server writes the cdr duration / billsec
correctly, but trust is not of the business world ....)
(there are some lynksis paps connected to the asterisk main server, and
they work perfectly)
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