I got a Tenor AXM800 and intend to use is as a SIP PSTN Gateway. I have configured 1 FXO port on the Tenor and have connected a free extension from our PABX onto this port. I can make calls from IP to any other extension on PABX but not in the reverse path i.e. from an extension on our PABX -> to Tenor -> IP. Can you please suggest some configuration steps for the same. Following is a text dump of the existing configuration.