Ip communicator error updating locale
POE offers a single cable solution, but may potentially result in lower audio quality (most corporate installations of these phones use POE).
The 79x1 phones are also compatible with the proprietary/pre-standard POE implementation used by the 79x0 phones.
This subject would not be worthy of its own page for most phones, but there are enough caveats and workarounds for these UAs that others may benefit from shared experience.
You should be able to talk Cisco support into providing access to the SIP firmware on a one-time basis by explaining that the phone is useless to you without it.A SMARTnet contract is the easiest way to gain legal access to all versions of Cisco firmware.A much more complete discussion of SMARTnet contracts is on Cisco page.Syburgh: I found this contract listed among the comments on the Cisco page and purchased this from UK-based