We originates calls to customers from the following endpoints:
These IP addresses correspond to our routing cluster exit nodes.
Our system sends RTP packets from the following subnets:
with RTP port-range: 10000-32767
We transmit and receive RTCP packets from port = rtp_port + 1 (as recommended in RFC3550). Additionally, we are able to receive RTCP packets on the same port as RTP, considering utilizing RTCP conflicts avoidance payloads (payload types 72-76).
DTMF signaling is supported as follows:
By default RFC 2833 enabled