[cisco-voip] srst bundle vs cme bundle?

[Michael Thompson]

from a fundamental level, there is no functional difference between
the code used for SRST or CME.  The difference is how it is
configured.

the licensing is the same cost last I checked.

Key Differences:

Ephones are not configured directly on SRST, they will only be created
after you connect to CCM the first time.  With that, if you configure
it as SRST...no phones will come up until AT LEAST the first time
there is WAN connectivity to CCM.

telephony-services configuration versus call-manager-fallback.  CME
systems put all the parameters in the telephon-services config and
there is more detail there (phone loads, etc).

The included phone load software.

there are more, but i think these are the key diff.

you can download, from Cisco, the .tar files containing the phone load
files.  once you dump those into the config and create the appropriate
configuration pieces (tftp statements, telephony service phone load
commands, etc) then the system is self sufficient.

On Nov 1, 2007 8:01 AM, Hassan Salama <hsalama_us at yahoo.com> wrote:
> what am trying to say is that the phone itself always keeps a copy of the firmware, and download only if there a mismatch when connected to CCM/CME
>
> SRST would not totally replace CCM/CME as it have a very limited fuunctionality (you can refer to product guide for more details) and generally it is used as a survivable solution in case of WAN failure.
>
> CME have a subset of the feature and functionality of the CCM.
>
> Product :                          Cisco Unified Communications Manager Express
> Number of Users :             Up to 240, depending on selection of Cisco Integrated Services Router
> Distributed or Centralized : Centralized for small businesses or distributed in branch offices
> Redundancy :                   Yes
> Server or Router Based :    Router
>
> Product :                          Cisco Unified Survivable Remote Site Telephony
> Number of Users :             Up to 720, depending on selection of Cisco Integrated Services Router
> Distributed or Centralized : Distributed in branch offices
> Redundancy :                   Yes
> Server or Router Based :    Router
>
>
> for more detail you can refer to url here after "Compare Products and Solutions" or refer to cisco product guides
> http://www.cisco.com/en/US/products/sw/voicesw/products_category_buyers_guide.html
>
>
>
> ----- Original Message ----
> From: Syed Khalid Ali <khalid_khursheed at hotmail.com>
> To: Hassan Salama <hsalama_us at yahoo.com>; cisco-voip at puck.nether.net
> Sent: Thursday, November 1, 2007 2:26:31 PM
> Subject: RE: [cisco-voip] srst bundle vs cme bundle?
>
>
> Hasan,
>
> I agree that the firmware is downloaded into the phone but it should be on the flash memory for the tftp server to load. In my case there are no files on the flash (the router is shipped with SRST bundled) for ip phones even though when I issue the "tftp-server flash:", it is working and phones get registered with cme.
>
> And again what is the difference b/w SRST bundle and CCME bundle.
>
>
> Regards,
> Syed Khalid Ali
>
> > Date: Thu, 1 Nov 2007 04:49:55 -0700
> > From: hsalama_us at yahoo.com
> > Subject: Re: [cisco-voip] srst bundle vs cme bundle?
> > To: khalid_khursheed at hotmail.com
> >
> > Hi,
> >
> > My understanding is that the firmware get downloaded into the phone when it is connected to CCM (when firmware mismatch -up/down grade), and in case of WAN failure (SRST mode) it keeps using the last firmware loaded (even if phone restarted several times)
> >
> > for Q1 : yes SRST is different from CCME , as CCME is a smaller version of CCM.
> > for Q2 : phone in SRST mode uses the latest loaded firmware (as my understanding).
> >
> > Regards,
> > HS
> > ----- Original Message ----
> > From: Syed Khalid Ali
> > To: cisco-voip at puck.nether.net
> > Sent: Thursday, November 1, 2007 9:53:36 AM
> > Subject: [cisco-voip] srst bundle vs cme bundle?
> >
> >
> > hi,
> >
> > Just bought a 2821 with SRST 3.3 bundle for one of the clients. i'm using it as CCME configured 2 7912 ip phones as well. But for my surprise there are no phone firmware file on the flash and phones are still working. now my question is:
> >
> > 1- Is SRST bundle different from CCME bundle?
> > 2- If yes, there should be firmware file for ip phones for the tftp server to load?
> >
> > best regards,
> >
> > syed khalid ali
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