Outbound Voice


How to Connect

Please find the IP addresses and port numbers used for the Inbound Voice service in the table below.

Server IP SIP Port RTP Port
Primary Voice Server (SIP+RTP) 5060 10 000 - 20 000
Secondary Voice Server (SIP+RTP) 5060 10 000 - 20 000

DTMF Support

Our Voice services support RFC2833.

Media Codec

Our Voice services support G.711 a-law codec.

SIP Requests

We support the following SIP requests: INVITE, ACK, CANCEL, BYE, PRACK, OPTIONS and UPDATE

Session KeepAlive Timer

The timer indicates the times in seconds that an active session (call) must be refreshed (by UPDATE or re-INVITE) in order to guarantee that the endpoint is still operational and is not downed. The timer is set to 1800 seconds.