ipTransportRtpBasePort

RTP IP Transport Base Port
          
UDP base port for the RTP/RTCP protocols.
          
The RTP/RTCP ports are allocated starting from this base port.
RTP ports number are even and RTCP ports number are odd.
          
The unit may use two or four RTP/RTCP ports per FXS/FXO
endpoint.
          
It uses two ports in case of a standard call, while it uses
four ports in other types of calls such as a conference call,
a call transfer, etc.
          
Example: let's say that a unit has two FXS endpoints and the
base port is defined on 5004:
          
  * if there is currently no ongoing call and FXS endpoint 1
    has an incoming or outgoing call, it will use the RTP/RTCP
    ports 5004 and 5005.
  * if there is currently a standard call on FXS endpoint 1
    and FXS endpoint 2 has a conference call, then FXS
    endpoint 2 will use the RTP/RTCP ports 5006, 5007, 5008,
    and 5009, which are the next available ports.
          
The range of ports reserved for RTP must not overlap the
ranges of ports reserved for T.38.

MIB

MX-MIPT-MIB

OID

.0.1600.1.400.100.100

Type

scalar

Access

readwrite

Status

current

Parent

ipTransportRtpGroup

Siblings

1