[Asterisk-Users] Incoming calls using iconnecthere

[nathan]

Hi All,

I can only seem to get iconnecthere working with incoming calls 
intermittently. One minute it seems to work, and the next it doesn't. 
I am not aware of anything being changed in the config files. Outgoing
calls work ok all the time.

The Asterisk box is behind NAT so that does complicate things slightly. 
However, the Iconnecthere PCPhone client software works perfectly for 
incoming calls.

When an incoming call is attempted Asterisk displays the following:

Warning [131081]: chan_sip.c Line 1991: (__transmit_response): Unable to
determine sequence number from ''

A second or so later the caller is directed to the iconnecthere
voicemail 
service.

Is anyone else experiencing a similar problem, or does it just work? 

Any hints or tips would be welcome :-)

Thanks,
Nathan.