Asterisk Via VPN from South America to NY

I have setup a VPN network to tunnel VoIP traffic from South America to NY and I have 2 way audio but I cannot hear the other party in South America clearly. They can hear me perfectly clear when they call my cell phone. The call is very choppy, I can hear about 3 words in a 10 word sentence and after about 10-20 secs the call terminates. This is the output of the call from the CLI. Any help is much appreciated.

– Called lesnet_peer/1XXXXXXX
– SIP/lesnet_peer-09022a98 is ringing
– SIP/lesnet_peer-09022a98 is making progress passing it to SIP/vishnu-0901d558
– SIP/lesnet_peer-09022a98 answered SIP/vishnu-0901d558
– Attempting native bridge of SIP/vishnu-0901d558 and SIP/lesnet_peer-09022a98
Mar 28 02:10:16 WARNING[7840]: chan_sip.c:1229 retrans_pkt: Maximum retries exceeded on transmission 2c4b7638-414e6e12@192.168.1.101 for seqno 102 (Critical Response)
Mar 28 02:10:16 WARNING[7840]: chan_sip.c:1246 retrans_pkt: Hanging up call 2c4b7638-414e6e12@192.168.1.101 - no reply to our critical packet.
== Spawn extension (translate, 1XXXXXXX, 1) exited non-zero on 'SIP/vishnu-0901d558’
ded*CLI>

And this is the setting in my sip.conf file for that client

[vishnu]
type=friend
username=vishnu
secret=123456
host=dynamic
qualify=yes
canreinvite=yes
dtmf=auto
context=translate
insecure=very
allow=g723
nat=no

Can anyone please help. Thank you.

Hi

Couple of simple questions

What is the bandwidth available at each end?
what is the spec of the machines at each end?

I would guess its a bandwith or power issue

Have you tried it not tunneled through the VPN ?

Ian

Some ports are blocked by the ISP the other party is using and they are using DSL. Their DL speed is 256 and the UP is 128. So, with me using G723, I think that is sufficient enough bandwidth. But, I still can’t hear them clear. Do you think it can be something to do with the compression that the VPN is using?

I am using a Linksys VPN BEFVP41 router in South America and connected to that is a Linksys RT31P2. I have a sonicwall connected to a T1 in NY.

Anyone out there that can help?

the fact that they hear you perfectly but your ability to hear them is very poor sounds very much related to the fact that your bitstream going to them through 256k of bandwidth and they are streaming to you at a spec’d 128k. chances are you are not getting even 128k.

you don’t say what hardware you are using at each end, and I agree that its either horsepower or bandwidth but my bet is on bandwidth based on the symptoms and the data presented here.

[quote=“mudslide567”]the fact that they hear you perfectly but your ability to hear them is very poor sounds very much related to the fact that your bitstream going to them through 256k of bandwidth and they are streaming to you at a spec’d 128k. chances are you are not getting even 128k.

you don’t say what hardware you are using at each end, and I agree that its either horsepower or bandwidth but my bet is on bandwidth based on the symptoms and the data presented here.[/quote

I am using a Linksys VPN BEFVP41 router in South America and connected to that is a Linksys RT31P2. I have a sonicwall connected to a T1 in NY.]