[cisco-voip] Tried to find good ITSP Provider

[Patrick Mowry]

  Nufone.net and Broadwing are the two I have used successfully.  Faxing
is an issue with both of them, with T.38 support coming in the future.
NuFone's prepaid minutes work well for my installs that are using SIP as
a backup to the PSTN.  So they have a block of time sitting there for
when needed instead of a recurring monthly bill.  I'm using them
personally for my home Asterisk system as well.

  I do not have any sites using SIP as a primary route yet, but one site
is considering it.

  I had issues with the few providers I tried who were using a Tekelec
system to provision their service.  An example was an issue where
CallManager would repeatedly send an ACK after the call setup was
complete as if it was never received at the provider's side.  Then the
call would disconnect after 34 seconds.

  For Cisco I'm using CallManager 4.2 and CallManager Express.  The
Server based CallManager needs Media Termination Points for SIP trunks.
The Software MTP on the call managers only support g711.  Since I needed
to support faxing, that was fine with me.  I have not tested with
transcoders yet for G729 calling.  CallManager Express worked just fine
with g729 and I used corlists to for fax lines to force them to g711.


------------------------------
Date: Mon, 18 Dec 2006 09:35:41 -0800 (PST)
From: Gu Sang Jung <gusangjung at yahoo.com>
Subject: [cisco-voip] Tried to find  good ITSP Provider
To: cisco voip <cisco-voip at puck.nether.net>
Message-ID: <20061218173541.775.qmail at web52010.mail.yahoo.com>
Content-Type: text/plain; charset="us-ascii"

I tried to find some good SIP trunk provider to connect both CallManager
4.1 and Asterisk. My customer want to save Long Distance call and
internaltional call billing.

Is there any advise for me.

Thanks in advance

gusang
NetworkEngineer
CCIE Voice&RS
1prospect.com