[Asterisk-Users] send a text message from a phone get - 405 method not allowed error

[Jerry Geis]

I happen to have a WIP-5000 phone. I can send text messages to the phone
no problem. The phone also has a feature "Write Msg". I use it and enter
a valid extension for a WIP-5000 phone (so It will receive the text message)
and enter some small message and hit send...

I get a "405 Method not allowed error".

Is there something I dont have setup to be able to send text from a SIP 
phone?

Thanks,

Jerry