From: Stan Buskus (stan.buskus@xxxxxxx)
Date: Sat Dec 16 2000 - 12:43:10 GMT-3
I'm not sure if I understand your question, but if you are trying to run voice
over ISDN I tried that once with a 1750 and had a difficult time getting it to
work.
In my case the 1750's were configured for 4 telephones at the remote site to
access a PBX at the main site over ISDN. There were several problems. First it
took about 4-6 seconds for dial tone to reach the remote site even though the
ISDN lines were permanently up. Consequently, I had to configure the trunks to
stay permanently up. This solved the dial tone problem. However, with 4 trunks
up permanently, about 100K of the 128K was consumed by the trunks (the customer
still wanted to run data). VAD was no help, the quality was terrible. The end
result was the line quality was poor to marginal, but the customer decided to
use it anyway.
I believe the quality issue relates to using the virtual interfaces over ISDN.
Since the virtual interface combines the BRI channels as one, it distributes
the voice packets across both interfaces. It then recollects the voice packets
on the other end. Perhaps it is this delay that caused our problem.
Stan Buskus
"Jason T. Rohm" wrote:
> I sent out some e-mails about this last month, I never got it going... so...
>
> Has anyone had success getting two routers to connect using a 36xx and a
> vic-2b-nt/te in network-side-mode as the phone switch?
>
> -Jason T. Rohm
> jtrohm@athenet.net
>
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