Voice over IP Cisco - Re: requirements for WAN link with centralized

Author

Re: requirements for WAN link with centralized

John Neiberger

2006-09-11, 1:11 pm

> Just wondering if there are posted requirements for WAN links with
> centralized deployments. I know that I've read somewhere about "if you want
> to have a offsite subscriber you have to have Xms with X delay, etc. etc.
> etc." just wondering if there is something similar when you are hanging a
> phone on the other end and it is talking to other phones and subscribers.
>
> I recall a small app you could run on a router that would do some tests.

The phones aren't a big deal. As long as your one-way delay isn't over
150 ms or so, you should be fine. As I recall, the maximum
*round-trip* delay over a WAN for a subscriber is 40 ms, which is
pretty stringent.

John