unplug wrote:
From the log, it showed lookup(): 'account name' Not found in usrloc.
I think it is the NAT problem, so I use stun for the case below.

Does the INVITE from the GW does have a proper formated request URI? The called phone number must be mapped to the username before doing lookup("location"). E.g. you can use aliases to map phone numbers to user names lookup("aliases"); (or use the aliasdb module)

regards
klaus



Telephone (A)
  |
PSTN
  |
G/W
  |
openser
  |
NAT -- IP phone(B) -- STUN
  + ----- IP phone(C) ------+

Below is the result:
A to B/C is ok
B/C to A is ok
However, there is no sound when B to C or vice versa.  What reason
will cause no sound between B and C?  Is the the reason from the
NAT/STUN?


On 12/12/05, Klaus Darilion <[EMAIL PROTECTED]> wrote:

Use ngrep to watch for incoming SIP requests on the SIP proxy.

Take a look at the logfiles on the gateway.

klaus

unplug wrote:

Below is the common configuration of the network.

Telephone -- PSTN -- G/W -- openser -- softphone (eg windows messenger)

I can make call from softphone to Telephone.  However, it is failed to
make call from Telephone to softphone.  I wonder why it happened and
any reference to trace the problem.  Anyone have such experience?

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