[asterisk-bugs] [JIRA] Closed: (ASTERISK-16668) ACK tone interupted - Jitterbuffers do not function properly as AlarmReceiver App does not send RTP regularly

[Digium Subversion (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-16668?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Digium Subversion closed ASTERISK-16668.
----------------------------------------

    Resolution: Fixed

> ACK tone interupted - Jitterbuffers do not function properly as AlarmReceiver  App does not send RTP regularly
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-16668
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-16668
>             Project: Asterisk
>          Issue Type: Bug
>          Components: Applications/app_alarmreceiver
>            Reporter: Grant Crawshay
>            Severity: Minor
>
> The SIP service provider added jitterbuffers, and since then the Alarm does not recognize the ACK tone.  Dialing manually and listening to the tone ones hears an interruption (high speed stutter). The Alarm keeps resending data until it times out.  Data is received correctly and the checksum is good.
> Wireshark was used to inspect a normal incoming voice SIP call - Asterisk sends back 20mS RTP timestamps regularly and the voice is uninterrupted.  When AlarmReceiver answers a call the RTP timestamps are erratic or non-existent. The ACK tone is badly distorted (as the packets are not assemble correctly by the jitterbuffers).
> ****** ADDITIONAL INFORMATION ******
> Changing to another SIP service provider cure the problem.
> There is no way to disable the SIP Service Provider's jitterbuffer.
> This is independent of firewall, location (internet connection) or Asterisk installation.
> This originally happened on an Asterisk 1.4 install, but a clean install of 1.6 gave the same issue.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira