User manual

Rainbow2 IP Phone User Manual

ATCOM TECHNOLOGY CO., LIMITED www.atcom.cn

up by the prefer codec preferentially if the far end also supports this codec.

However, the actual codec used in a call still depends on the outcome of the codec negotiation

protocol.

2. User Prefer Codec Only: Only use the preferred codec for all calls. The call will fail if the far end

does not support this codec.

3. DTMF Tx Method: select the method to transmit DTMF signals to the far end: Inband, RFC2833,

SIP INFO. Defaults to RFC2833.

 Call Feature Setting

1. Message Waiting: whether to prompt if there is a voicemail.

2. Voice Mail Number: set voicemail number.

3. Pickup Service Code: set Pickup Service Code.

4. UDP Keep Alive Enable: whether to enable UDP keep alive. If enabled, Rainbow2 sends UDP

packets periodically to keep the server port alive.

5. UDP Keep Alive Intvl: Set interval to send UDP packets.

6. Default Ring: set default ring tone.

7. SRTP: whether to enable SRTP (Secure Real Time Control Protocol). Only can be used if server

supports SRTP.

 Dial Plan

Dial Plan: Configure dial rule for SIP account, please refer to dial plan.