[Freeswitch-users] 10 seconds delay on fallback

[Michael Collins]

Which rev of FreeSWITCH are you running? Also, collect a full debug trace of
a working vs. non-working call so that you can compare what's happening. Put
those on pastebin so others can have a look.
-MC

On Wed, Jan 13, 2010 at 4:46 AM, Sergey Okhapkin
<sos at sokhapkin.dyndns.org>wrote:

> To implement fallback to backup PSTN routes and do LCR my dialplan executes
> the following commands:
>
> set execute_on_answer=set hangup_after_bridge=true
> set some custom channel variables
> bridge sofia/gateway1/number
> set some custom channel variables
> bridge sofia/gateway2/number
> ....
>
> This generally works fine if gateway1 returns SIP error, dialplan sets
> channel
> variables to another values and calls gateway2 immediately. But if GW1
> responds with 183 early media and SIP error after that, bad thing happens -
> dialplan continues immediately, sets channel variables, executes bridge
> application, but INVITE to GW2 is sent after 10 seconds delay. Caller gets
> 10
> extra seconds of post dial delay. I suspect the delay happens because of
> attempt to read audio frame, switch_ivr_originate() has the following
> lines:
>
> if (switch_channel_media_ready(caller_channel)) {
>        tstatus = switch_core_session_read_frame()
>      ...
>
> Any advice how to avoid extra delay in this situation?
>
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