[asterisk-bugs] [JIRA] (ASTERISK-19883) RTP packet with Timestamp=0 on Multicast paging

[Pietro Bertera (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-19883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=200627#comment-200627 ] 

Pietro Bertera edited comment on ASTERISK-19883 at 12/12/12 3:21 AM:
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I successfully reproduced this issue:

the issue appears with Dial(MulticastRTP/basic/239.255.255.245:5555,,A(my-announce))

seems that res/res_rtp_multicast.c doesn't check if the source frame contains timing info: the issue doesn't appears using SIP as a channel driver.

Attached here you can find [^sip.conf], [^extension.conf] and the pcap trace taken from the phone.

reproduction step:
1) configure a phone for receiving multicast stream
2) configure the dialplan using Dial(MulticastRTP/basic/xxx.xxx.xxx.xxx:yyyy,,A(some-announce-file))
                
      was (Author: pbertera):
    I successfully reproduced this issue:

the issue appears with Dial(MulticastRTP/basic/239.255.255.245:5555,,A(my-announce))

seems that res/res_rtp_multicast.c doesn't check if the source frame contains timing info: the issue doesn't appears using SIP as a channel driver.

Attached here you can find sip.conf, extension.conf e the pcap trace taken from the phone.

reproduction step:
1) configure a phone for receiving multicast stream
2) configure the dialplan using Dial(MulticastRTP/basic/xxx.xxx.xxx.xxx:yyyy,,A(some-announce-file))
                  
> RTP packet with Timestamp=0 on Multicast paging
> -----------------------------------------------
>
>                 Key: ASTERISK-19883
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-19883
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Applications/app_page
>    Affects Versions: 1.8.11.1
>         Environment: AsteriskNow 2.0.2
>            Reporter: Giacomo Trovato
>            Assignee: Rusty Newton
>         Attachments: extensions.conf, rtp-timestamp-zero.pcap, sip.conf
>
>
> Multicast paging doens't work since multicast RTP packets have Timestamp=0.

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