[asterisk-users] Finding far end echo in Verizon network

[Andrew Latham]

Same problem here, the far end has to complain to Verizon for anything
to happen unless you want to get an echo canceler.   I have know calls
routed via a ISTP provider that is known not to echo on Verizon
networks.



On 7/19/06, carl Lougher <c_lougher at yahoo.co.uk> wrote:
> This is a weird one.
>
> Network:
> Asterisk ver 1-0-9 on DL360.
> 10 Cisco 7960g phones with 3.8.2 SIP Load.
> Gateway - Cisco 2811 router with 4 x verizon bri's.
> Network - Private vlan with 1ms response times to all
> devices.
>
> Issue:
> Intermittent echo on outbound/inbound calls. Users
> hearing their own voice about 0.5sec later.
>
> Tried so far:
> Upgraded firmware on some phones to 3.8.2
> Upgraded software on Cisco router.
> Changed gain and attentuation settings on cisco router
> Got Verizon to test bris
> Moved rtp from asterisk direct to phone and router
> (canreinvite=yes)
> load tested asterisk
>
> None of the above made any difference.
>
> They are hearing their own voice so that means the
> issue is on the far end. But should it be up to me to
> control the possible delay or slippage in the verizon
> bri network?
>
> Any help much appreciated.
>
> Taf.
>
>
>
>
>
> ___________________________________________________________
> All new Yahoo! Mail "The new Interface is stunning in its simplicity and ease of use." - PC Magazine
> http://uk.docs.yahoo.com/nowyoucan.html
> _______________________________________________
> --Bandwidth and Colocation provided by Easynews.com --
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users
>


-- 
---
Andrew Latham - AKA: LATHAMA (lay-th-ham-eh)
lathama at lathama.com - lathama at gmail.com
If any of the above are down we have bigger problems than my email!
Hind sight is most always 20/20 or better.
---