For a long time, I used here and there some Patton Smartnodes as PSTN to SIP gateways.
The issue is for SIP calls from Patton to Asterisk:
Patton sends an INVITE
Asterisk replies with a 401 including a realm, nonce, etc …
Patton acknowledges the 401
Patton DO NOT re-invite using appropriate realm, nonce, …
I could work around this, either with SIP or PJSIP, but I would prefer to better understand what is going on and how I should edit with Patton config to have it re-INVITEing as described above.
Have someone successfully configured a Patton to re-INVITE with Asterisk.
If possible, can you share a config extract or example ?
Yes, I meant a retry of previous INVITE not a Re-INVITE with T tags and so on.
What do you mean by “Not many things authenticate both ways” ?
Either inbound or outbound calls are authenticated (ie challenged with a password) but never both ?
ITSPs generally don’t respond to attempts to authenticate them, which is why you see so many insecure=port,invite lines, although most only need the invite part. Phones don’t authenticate the PABX.
It would be desirable for a gateway to authenticate its caller, as it can make chargeable calls, but might not be considered necessary for it to authenticate the internal network.