Hi,
The use of proxy is not limited to this. Even if a phone book is used to
store the sip addresses. There may be cases where in the target phone is
moved to some other location. It needs to get registered with a different
proxy of a different service provider first. ( the concept of roaming comes
into picture here.) In this case any calls made to the target phone need to
go to the redirect server which redirects the request via the proxy server.
Regards,
santpsh
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Jerry Ipe
Thomas
Sent: Monday, June 28, 2004 10:02 AM
To: Shahed Moolji
Cc: SIP Implementors Mailing List
Subject: RE: [Sip-implementors] Query on User Agent
Hi Shahed,
To add to your comments...
These hard phones have a facility known as a phone-book call wherein the
user can configure the target's phone number (SIP Username), IP address and
transport port number in his phone-book so that when he/she dials that
particular phone number, he/she will in effect initiate a direct call to the
end user agent. So you don't necessarily need a proxy server to make SIP
calls.
Warm Regards,
Jerry Ipe Thomas
Engineer(R&D)
D-Link India Ltd.
Software & R&D Center
Bangalore - 68
Ph: +91-80-26788350/1 Extn: 117
Mob: +919886442530
-----Original Message-----
From: Shahed Moolji [mailto:[EMAIL PROTECTED]
Sent: Friday, June 25, 2004 7:29 PM
To: suresh parakkal; [EMAIL PROTECTED]
Subject: Re: [Sip-implementors] Query on User Agent
Suresh,
I am 99.9% sure that there is no need for a proxy server etc.
2 UA's can interact directly. However, some hardware phones
insist on first registering with a proxy first, so if you
want to say, test your software UA with one of these devices,
it may be a problem.
Regards
Shahed
> In other words whether the User agent (phone) will have the capability
> to initiate the call as well as receive the call by default as per the SIP
> standards?
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