Hello all, I¹ve been hacking at this issue for the last 3 days and I can¹t get beyond this error when attempting to call out through my sangoma card. SIP/2.0 503 Service Unavailable Via: SIP/2.0/UDP 192.168.100.6:12026;branch=z9hG4bK-d8754z-77564c04563bac12-1---d8754z-;rport =12026 From: "Sean Holt"<sip:2028@172.16.15.10>;tag=25dacb3d To: <sip:5102079553@172.16.15.10>;tag=4St9j3N9yXr8g Call-ID: NWViZTI0ODljMmY1YTM5ZDRiZmQzNTUwYzgwNWVkMDQ. CSeq: 1 INVITE User-Agent: Configured by TCAPI Accept: application/sdp Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE Supported: precondition, path, replaces Allow-Events: talk, hold, presence, dialog, line-seize, call-info, sla, include-session-description, presence.winfo, message-summary, refer Reason: Q.850;cause=34;text="NORMAL_CIRCUIT_CONGESTION" Content-Length: 0 Remote-Party-ID: "5102079553" <sip:5102079553@172.16.15.10>;party=calling;privacy=off;screen=no Here¹s my configuration: I¹m trying to call out from my internal voip phone through my sangoma card b600. My phone line is plugged into the FXO port. Module (mod_freetdm) is successfully loaded Dialplan: <extension name="main_number_53"> <condition field="destination_number" expression="^(\d{11})$|^(\d{10})$$"> <action application="bridge" data="freetdm/2/2/$1"/> </condition> </extension> Freetdm.conf file [span wanpipe wp1] name => FreeTDM number => 1 trunk_type => FXS fxs-channel => 1:5 [span wanpipe wp2] name => FreeTDM number => 2 trunk_type => FXO fxo-channel => 1:1-4 Freetdm.conf.xml file <configuration name="freetdm.conf" description="FreeTDM Configuration"> <settings> <param name="debug" value="9"/> <!--<param name="hold-music" value="$${moh_uri}"/>--> </settings> <analog_spans> <span name="wp1"> <param name="context" value="context_1"/> <param name="dialplan" value="XML"/> </span> <span name="wp2"> <param name="context" value="context_1"/> <param name="dialplan" value="XML"/> </span> </analog_spans> </configuration> Let me know if I need to provide additional info Thanks Sean