SMS Framework compatability with latest changes to server.
Remove hangup warning for "text" calls.
common entry-point function

voipsession code.

added sessions to tropo and twilio.

voipsession save()

update channel field names
added network fields to voipcall
removed process_response field
implemented tropo version of new adddial
changed sample script for voipscript_call_sms_sender

implemented addCall in Tropo.

Added call_channel.
Added API methods for channels.
updated tropo and twilio regarding the channel methods.

Added sample script.

tropo works with default outbound script.

added default outbound text script.

implementation of hook_sms_incoming()

Changed getScript() and setScript($script) to getScript($channel)
and setScript($channel)
Implemented inbound text script for tropo
Voipcall log tables improved (sorting, anonymous)

Use new function names.