D10 DECT Ringing Tones and Behavior
The Sangoma D10 DECT handset features 6 built-in polyphonic ringing tones. Â The presentation of tones may be controlled remotely on a per-call basis by sending a specially crafted Alert-Info header in an INVITE to the DB20 base station.
The header should be presented like:
Alert-Info: <http://127.0.0.1>;info=myringingtone
Where myringingtone is one of the following values, each value presenting a different ringing tone:
external
vip
highpriority
lowpriority
blacklist
whitelist
The default ringing tone for the handset is the external ringing tone.
The ringing behavior of the handset is determined by use of a Call-Info header. To cause the handset to go off-hook automatically, for the purposes of intercom paging, use a Call-Info header in your INVITE with a positive value for the answer-after parameter, such as:
Call-Info: answer-after=1