[SIPForum-discussion] doubt regradinng SIP and MGCP

[Steve Parrish yahoo]

Hello everyone,
   I have a question about the following statement...

"H.323 has been the most widespread signaling protocol out there today"

Is this still true now-a-days?  

How many deployed H.323 endpoints are there compared to SIP?

I have a tough time envisioning that H.323 endpoints outnumber SIP when
we consider Vonage, Packet 8, Free World Dialup, Lingo, etc.
memberships.

When I go to trade shows I don't see a lot of H.323 IADs, MTA, and IP
Phones.  They all seem to be SIP to me.

-Steve Parrish

-----Original Message-----
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Naresh Parmar
Sent: Friday, July 22, 2005 2:00 PM
To: An open list for discussion of SIP-related topics
Subject: Re: [SIPForum-discussion] doubt regradinng SIP and MGCP

SIP, H.323 and MGCP, all these three are the signaling protocols which
can be used to provide multimedia signaling capabilities. MGCP is a
protocol in which the the end terminals are dumb and they just notify
the controller about the events (i.e. like phone offhook), the
controller then instructs the terminal to do further processing(i.e.
like providing dial tone etc).. the whole brain is in the controller.
This may be useful in situations where the endusers do not want to buy
expensive equipment and are good with their dumb terminals.

H.323 has been the most widespread signaling protocol out there today
and provides seamless integration with the traditional PSTN networks.
SIP is increasingly becoming popular and will eventually be the winner
because of its simplicity and flexibility. SIP provides better user
mobility, integration with the other services like DNS, ldap, database
services, multiple contacts for a given user and a lot of flexibility
to write applications around it. H.323 has some advantages over SIP in
terms of PSTN integration and more resemblance to the traditional
circuit switched systems.

Finally, SIP can be integrated with the PSTN or going further it may
replace the traditional phone system as such simply because of the
flexibilty provided by SIP wherein users would like to have
fascinating features added to their phone devices.

Hope this clarifies some of your doubts.

cheers,
naresh
On 7/22/05, Ponrajdurai <ponrajit at yahoo.com> wrote:
> Hi,
>  
>   can anyone please tell me, what is the use of MGCP in Networks
because I'm
> getting confused with SIP, H323 and MGCP in many situations. 
>  
>      As well as, How SIP will overcome the present, traditional
circuit
> switched networks? will it be using MGCP for this or it tries to
eliminate
> MGCP?
>  
> waiting for your reply
>  
>  
> with regards
> Ponrajdurai Sokkeswaran.
> 
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