We can sell to you ... We do have a solution for 500k sip subscribers
(udp/tcp/tls) and you can have 6000 locations with centrex and you can
have

Any number plan  specific to each location. Then you can dial 3,4 ,6 ,10
, digits ....




-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of ext
Ali Kemal MAYUK
Sent: Monday, November 29, 2010 9:36 AM
To: [email protected]
Subject: [Sip-implementors] CENTREX Solution with SIP

Hi all;

I am investigating about how Centrex work with SIP. If an enterprise
customer has a 2 different locations, how they call each other with
short
numbers(4 digit) ? Which SIP headers are used for it? Is there a
standartization ? Does any one have a solution documentation? How the
big
companies handle it?

-- 
Kemal
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