[cisco-voip] 7940/60 and 7912 SIP image for CCM Questions

[Jason Aarons (US)]

I agree with Jason.  If you had new 79x2 and CCM 7.0(1) they you could test a couple phones with  SIP loads.  The older 79x0 didn't have enough memory/flash for SIP and lacked features/functionality.  CCM 7x adds more line side SIP features with the goal towards feature transparency between SIP and SCCP.

 

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Jason Burns
Sent: Wednesday, December 17, 2008 10:06 PM
To: Jorge L. Rodriguez Aguila
Cc: cisco-voip at puck.nether.net; Jose Mujica; Freddy Bello
Subject: Re: [cisco-voip] 7940/60 and 7912 SIP image for CCM Questions

 

I don't really recommend moving to SIP on your IP Phones. From my personal experiences, these phones "just work" with SCCP. With SIP there are so many "gotchas" and caveats that I wouldn't think it is worth the hassle just to use "Open Standards".

All you'll get is a warm fuzzy feeling and higher long term support costs.

If there is no mandate from on high to use SIP - then stick with SCCP.



On Wed, Dec 17, 2008 at 9:54 AM, Jorge L. Rodriguez Aguila <jorge.rodriguez at netxar.com> wrote:

I have a Customer that wants to start moving to Open Standards and wants to move his phones which support SIP to SIP and leave the older not supported models on Skinny until he starts replacing them with newer models. I see that there is a CCM SIP image for the 7940/60. Is there anything special needed to support these phones on the CCM as you need with native SIP phones like say Linksys or do they just behave like their skinny based counterparts? I guess my question is, do I still need to use stuff like the NTP reference instead of the CCM time group or create special MTPs for these phones as I would need for other SIP devices? Also I see there is a CCM SIP image as well for the 7912 but it says CCM 5.0.4 only, has anyone tested this fw with ccm 6.1.2?

 

Thanks in advance for the Help;

 

Jorge Rodríguez Aguila

CCNA,CCVP,CRMCS,CIPCES

Senior Voice/Data Network Consultant

Netxar Technologies

jorge.rodriguez at netxar.com

Office 787-765-0058

PCS 787-688-8530

 

 


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