Asterisk is not sending RTP Packets when whispering via ChanSpy

Asterisk Asterisk Support
1

Hi,

i want to Playback audio on a channel with ChanSpy. I am getting no error Messages in the CLI.
Already checked with ‘rep set debug on’ if asterisk is sending RTP Packets, but that is not the case.

CLI output:
Called playback1@ivr
– Executing [playback1@ivr:1] Answer(“Local/playback1@ivr-00000003;2”, “”) in new stack
– Local/playback1@ivr-00000003;1 answered
– Executing [7012@ivr:1] Answer(“Local/playback1@ivr-00000003;1”, “”) in new stack
– Executing [7012@ivr:2] ChanSpy(“Local/playback1@ivr-00000003;1”, “PJSIP/8001,qw”) in new stack
Spying on channel PJSIP/8001-00000004
– Attaching spy channel Local/playback1@ivr-00000003;1 to PJSIP/8001-00000004
– Attaching spy channel Local/playback1@ivr-00000003;1 to PJSIP/8001-00000004
– Executing [playback1@ivr:2] Wait(“Local/playback1@ivr-00000003;2”, “4”) in new stack
0x7fcafc01c510 – Strict RTP learning complete - Locking on source address XXXXXXXXXXX:4010
Executing [playback1@ivr:3] Playback(“Local/playback1@ivr-00000003;2”, “welcome”) in new stack
– <Local/playback1@ivr-00000003;2> Playing ‘welcome.slin’ (language ‘en’)
– Executing [playback1@ivr:4] Hangup(“Local/playback1@ivr-00000003;2”, “”) in new stack
Spawn extension (ivr, playback1, 4) exited non-zero on ‘Local/playback1@ivr-00000003;2’
Done Spying on channel PJSIP/8001-00000004
== Spawn extension (ivr, 7012, 2) exited non-zero on ‘Local/playback1@ivr-00000003;1’

I tried my setup with AMI,AGI and with Originate in the Dialplan but could not solve my problem.

Has anybody a Hint for me.

2

Please explain why you want to do this, as it is not a normal use of ChanSpy and I don’t really want to have to work our what you are trying to do.

3

have you cheked where it is a statefull firewall issue
can you check on asterisk where it try to send rtp or not

4

Hi Mark,

i have used the ‘rpt set debug on’ command to check wether asterisk is sending rtp packets or not.

When I use Playback normally on the channel as Dialplan application then asterisk is sending RTP packets.
But when I try to whisper the Playback over a Local Channel with ChanSpy then asterisk is not sending RTP Packets out. So I guess I don’t have firewall issues.

Is there any output in the CLI where I can see if whispering is possible now

5

Hi David,

i am trying to do multiple Task on one SIP Channel in parallel to build an IVR without DTMF.

6

Asterisk has to be doing something that is sending audio in order for whisper to work. For example a Wait won’t do it, while a Playback will. It hasn’t been stated here what PJSIP/8001 is doing at the time of whispering.

7

Thanks.

I had put PJSIP in Wait.

8

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