[asterisk-users] strange SIP-SIP delay

[Julian Lyndon-Smith]

Hi Steve - the vpn is a "consistent" as the sip->IDSN has to go through 
the VPN first to get to asterisk.

i.e. to make an "outside" call, PhoneA goes through the vpn to the 
asterisk box, and out through isdn.

Julian

Steve Totaro wrote:
> On Tue, Jun 17, 2008 at 11:39 AM, Julian Lyndon-Smith <asterisk at dotr.com> wrote:
>> I've got the following setup:
>>
>> PhoneA ->
>>  router ->
>>   vpn ->
>>    router->
>>     asterisk (SIP / ISDN)
>>
>> PhoneB ->
>>  asterisk (SIP / ISDN)
>>
>> If phone A is connected to phone B (sip-sip), there is a noticable delay
>> (up to 2-3 seconds) between me speaking and the other end hearing.
>>
>> If phone A calls out via the ISDN and back in  to the DDI of phone B (ie
>> SIP->ISDN->ISDN->SIP) then there is no delay at all !
>>
>> Any clues on where I might start looking for this ?
>>
>> Julian
>>
> 
> Have you tested the latency across your VPN?
> 
> Thanks,
> Steve T
>