[cisco-voip] cm phone image size when remote site download

[Robert Kulagowski]

James Grace wrote:
> Im doing a site where the cm is at the central location.  We are already having some bandwith issues prior to the cut.  My question is what the size of the phone loads from CM when we try to bring the remote phones up.  I know the bin file is one size but is that the sames size that will come across the wan for the phone to download and reg to CM

This was discussed about one month ago (check the archives.)  Yes, with 
current versions of the phone firmware, each one is going to 
individually pull it from the TFTP server.  I had a similar situation 
where I was upgrading a number of phones and didn't want to do it over 
the WAN, so I configured a TFTP server local at the site (you can use 
the router itself as a TFTP server, or setup something like the 
SolarWinds TFTP server on a Windows box 
(http://www.solarwinds.net/Tools/Free_tools/TFTP_Server/) and then 
configure the "Alternate TFTP" setting in Call Manager under Device > Phone.

Cisco packages each phone firmware load as a .exe and a .zip; just grab 
the .zip and unzip it into your TFTP server directory at the site if 
you're going to do it the "manual" way.  Worked well for me.

Someone from Cisco said that future versions of phone firmware may use 
some sort of peer-to-peer scheme.