BGP - Asterisk problem


#1

Hello,

Since last week I have a problem with very low quality of VoIP calls. There is roaring in most of calls, but when someone calls back again the problem disappears.

I have PBX asterisk in version 1.6 and router vyatta in version VC6.6R1 with BGP from two internet providers, one path is a preferred one. The configuration of asterisk and vyatta hasn’t been modified for the last 6 months and everything worked well.

My VoIP provide says that the reasons of low quality calls are that:

  1. the traffic network is multipath and switched between the two links, the RTP stream disappears on my side and that SIP ALG is enabled. I have already turned off the SIP ALG but there was no effect.

If somebody could help me I would appreciate it.

Regards


#2

First thing, to make sure you are troubleshooting the correct piece of the puzzle, what does “roaring” mean? The more specific you can be about the problem, the better.


#3

Please copy your SIP ALG conf. In my company sometimes i must restart conntrack-sync between two main links (vpn ipsec point to point connection, via optic fiber) when link is down.

Command to restart:

This is my SIP ALG conf:

But when sip is comming out to remote provider, we route sip connection via cisco router with option:

Beacouse we loose connection with external provider (in/out call) when traffic comming out witch vyos

Also you may analyze packet with wireshark and check: jitter and RTP lose,check routing in booth sites, change sip client (like a microsip, 3cx) and in asterisk configure in test sip account codec to ulaw,alaw and delete gsm coddec.

Regards,