[cisco-voip] Getting started in SIP...

[Lelio Fulgenzi]

I think you'll get quite a few opinions on this, here are mine: 

    • SIP is not as "cost effective" as you might think, unless you already have internet access from your SIP provider. Typically, your ISP will want to limit the amount of voice on the link so you will have to purchase more bw and it will sit idle. 
    • SIP is not as "feature rich" as current PRI technology is, so there will be issues with conferencing, holding, faxing, etc. 

These opinions are based on our local SIP providers (and about 6-12 months ago at that). 

Things to think about: 

    • what equipment will you need to run this SIP trunk (3945, CUBE, DSPs, etc?) 
    • what features will you lose/gain if you move to SIP 
    • what are the full costs 
    • what about reliability, quality, etc? 


--- 
Lelio Fulgenzi, B.A. 
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1 
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN) 
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
Cooking with unix is easy. You just sed it and forget it. 
- LFJ (with apologies to Mr. Popeil) 


----- Original Message ----- 
From: "Robert Kulagowski" <rkulagow at gmail.com> 
To: "Cisco VOIP" <cisco-voip at puck.nether.net> 
Sent: Tuesday, April 6, 2010 1:21:37 PM GMT -05:00 US/Canada Eastern 
Subject: [cisco-voip] Getting started in SIP... 

Are there things that folks are doing to get familiarized with SIP 
trunking from providers without committing to a 1 year contract? Is 
there a way to experiment "in house" that is applicable once you get a 
SIP trunk from a provider? Still trying to determine if there's a 
cost justification in moving from a TDM-style PRI configuration to a 
SIP trunk configuration. Or is it not a cost justification that's 
driving this train? 
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