Feature #42

Dropped Call Alert

Added by ex1st almost 6 years ago. Updated almost 6 years ago.

Status:ResolvedStart date:04/05/2012
Priority:NormalDue date:
Assignee:-% Done:


Category:-Spent time:-
Target version:OSTel Operations


I tried switching off wifi and hopping immediately to 4G while on a call. The phone call just went to silence. Is it possible to create a dropped call alert or to monitor that a call is no longer connected if in the future we stop logging information?


#1 Updated by lee almost 6 years ago

  • Status changed from New to Resolved

This scenario is by design. It's not "dropped call" as much as it is a "unavailable network". SIP isn't smart enough to do the following in the event of a running call that loses a network leg:

re-register to the server (this alone will cut off all network communications from the switch)
pause the audio stream on the server,
hang up the failed leg (because the IP address is gone)
call back the switch with the stored ID of the paused audio stream
renegotiate audio with the new IP address

Since we're dealing with realitime synchronous audio over UDP, it's safe to say that if a call is in progress and the user's network connection changes, the call will hang up and you will have to make a new one over the new network.

#2 Updated by n8fr8 almost 6 years ago

  • Target version changed from Alpha Testbed Launch v1 to OSTel Operations

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