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Convert Cisco IP Phone CP7942G from SCCP to SIP without Callmanager


I bought 4 Cisco IP Phones CP7942G for use with an Asterisk server using SIP, as i don't have Calllmanager and have an existing Asterisk setup.

I know this has been discussed many times, but i am finding it very hard to find an easy consistent way to convert my

Cisco IP Phone CP7942G from SCCP to SIP.

That said i am sure the path is probably not easy

Every where i look there is always this reference to downloading firmware P0SXXXX.bin (XXXX relating to version).

When i go to the Cisco download website and download the Cisco SIP firmware for my Phone (i have SCCP 42.9-0-2SR2), i am presented with 2 options:

cmterm-XXXXX.cop.sgn - which from my reading appears to be for installation from Callmanager, i do not have this. - which from my reading should be possible to load onto an IP phone using a tftp server.

When i extract the files, there is not .bin file and no P0SXXXXX named files at all

So on reading any of the many tutorial's the Internet has to offer, i usually fail at he first hurdle, in that i do not have the files mentioned (.bin or PS0).

Any help and guidance would be much appreciated.



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