I have 2 offices connected over IAX2 trunk. There is Cisco SPA 525G2 phone with SPA-500 module in one office. I’d want t monitor extensions connected to Asterisk server in 2nd office.
For 1st office subscription/BLF works fine:
<Unit_1_Key_1 group=“Att_Console/Unit_1”>fnc=sd+cp+blf;[email protected]</Unit_1_Key_1>
where 10.0.0.1 is LAN ip in 1st office
but for 2nd office BLF does not work
<Unit_1_Key_2 group=“Att_Console/Unit_1”>fnc=sd+cp+blf;[email protected]</Unit_1_Key_2>
where 126.96.36.199 is public IP of 2nd office
pbx*CLI> sip show subscriptions Peer User Call ID Extension Last state Type Mailbox Expiry 0 active SIP subscriptions
On phone I see that subscription failed.
Where can I allow subscription over trunk or for fixed IP?