IP Phone non-stop ringing after PSTN caller disconnect the line.PSTN caller call to IP phone thru H323 gateway FXO port, gateway pass to CM, did not pick up the call, caller disconnect the call, IP phone still ring. there is no problem gateway pass to analog phone attached to FXS port
When loop-starting signaling is used, a router's FXO interface looks like a phone to the PSTN switch. The FXO interface will close the loop to indicate off-hook. The switch always provides a battery so there is no disconnect supervision from the switch side. Since a switch would expect a phone user (example of an FXO interface) to hang up the phone when the call is terminated (on either side), it also expects the FXO port on the router to hang-up. This "human intervention" is not built into the router. The FXO port expects the switch to tell it when to hang-up (or remove the battery to indicate on-hook). Because of this, there is no guarantee that a near-end or far-end FXO port will disconnect the call once either end of the call has hung-up.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...
If you have 2 ISR routers, one acting as Failover, do we need to have both the same number of SRST licenses on the 2 routers?
No. You will only need the SRST licenses on the primary router. Because this feature...