[Asterisk-Users] OT: SIP vs. Skinny protocol

[Ray Burkholder]

Skinny phone functionality is 'richer' than SIP phone functionality.  First
off, on a skinny phone, in hands free mode, you can start dialling and the
phone will automatically go off hook.  Sip requires you to manually hit the
speaker button, hit new call, or pickup the phone before dialling.  (One
extra confusing key stroke I have a hard time getting over).

I don't think SIP will work with the expansion modules on a 7960.

Those are a few things I've found.

On Asterisk there is a chan_skinny and a chan_sccp available for skinny
based phones.  Perhaps as more Cisco phones get used with *, more features
will get implemented so they respond in a fashion very similar to a
Callmanager installation.  Maybe Cisco is already doing that in their labs?
That would be cool.

Ray Burkholder
ray at oneunified.net
http://www.oneunified.net
704 576 5101


> -----Original Message-----
> From: asterisk-users-admin at lists.digium.com 
> [mailto:asterisk-users-admin at lists.digium.com] On Behalf Of 
> Peter Pauly
> Sent: December 23, 2003 12:52
> To: asterisk-users at lists.digium.com
> Subject: [Asterisk-Users] OT: SIP vs. Skinny protocol
> 
> 
> I assume there are several people on this list that
> have Cisco Call Manager implementations under their
> belt....
> 
> We are beginning a call manager implementation and
> the first question I asked Cisco was, should we use
> SIP or Skinny. Cisco is pushing me towards Skinny, 
> saying that I will lose some functionality with SIP.
> They also say that most of their customers implement
> skinny.
> 
> I see two obvious benefits to using SIP: 
> 
> 1. I can get cheaper phones that run SIP, altough
> Cisco just came out with a 7902G for $130 US. 
> 
> 2. It's an open protocol and is more likely to 
> survive long-term. 
> 
> What functionality do I lose by going with Skinny?
> 
> Will Cisco eventually go with SIP only and I'll have
> to convert anyway?
> 
> Any other pluses or minuses?
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