Polycom SIP 3.1 - Manual (Page 216)

Administrator’s Guide SoundPoint IP / SoundStation IP
A - 62
Port
This attribute includes:
• RTP
RTP
This configuration attribute is defined as follows:
Attribute
Permitted
Values
Default Interpretation
tcpIpApp.port.rtp.filterByIp 0, 1 1 If set to 1, reject RTP packets
arriving from (sent from) a
non-negotiated (through SDP) IP
address.
tcpIpApp.port.rtp.filterByPort 0, 1 0 If set to 1, reject RTP packets
arriving from (sent from) a
non-negotiated (through SDP)
port.
tcpIpApp.port.rtp.forceSend Null,
1024-65534 Null When non-Null, send all RTP
packets to, and expect all RTP
packets to arrive on, the
specified port.
Note: both
tcpIpApp.port.rtp.filterByIp and
tcpIpApp.port.rtp.filterByPort
must be enabled for this to work.
tcpIpApp.port.rtp.mediaPortRangeStart Null, even
integer from
1024-65534 Null If set to Null, the value 2222 will
be used for the first allocated
RTP port, otherwise, the
specified port will be used.
Subsequent ports will be
allocated from a pool starting
with the specified port plus two
up to a value of (start-port + 46),
after which the port number will
wrap back to the starting value.