User manual

Http://www.dbltek.com VP-102 / VP-202 User Manual

Advanced Settings

More settings are available under the Advanced Settings tab. Depending on your network requirements, please

consult your network administrator for the correct configuration.

1. Signaling Port – This Port is used to convey signaling message with the SIP Proxy. The standard port

number is 5060.

2. NAT Keep-alive – When enabled, a dummy packet I sent to the local firewall / router in order to keep the

ports opened for VoIP service.

3. P2P – This enables Peer-to-Peer calls.

4. Virtual Ringback – This enables a ringback tone to be generated whenever a call is made.

5. DTMF Signaling – This parameter sets the method of sending DTMF signals. Inband means that the

DTMF signal is sent as an analog signal via the voice channel. Outband means that the DTMF signal is

sent as DTMF command via the data channel. Both RFC2833 and SIP INFO methods are supported. For

RFC2833, a DTMF payload type is required and the default type is set to 101.