Specifications

Interoperability Configuration Reference Manual (MGCP/NCS Version)
Mediatrix 4100
79
The following illustrates the message flow when using the firewall keep-alive feature.
Figure 26: Firewall Message Flow
Interoperability Configuration
The following sections describe a few interoperability parameters you can use to impove the way the Mediatrix
4100 interops with other products.
Offer/Answer Model
You can define whether the Mediatrix 4100 requires strict adherence to RFC 3264 from the peer when
negotiating capabilities for the establishment of a media session.
 To define how to process the Offer/Answer model:
1. In the mgcpncsExperimentalMIB, set the mgcpncsValidateOfferAnswerModel variable to the proper
value.
Note: The RSIP RM: x-keepalive command does not require any 200 OK from the MGC. In this case, the
200 OK is optional.
Firewall
RM: restart
RM: x-keepalive
RM: x-keepalive
200 1001 OK
RSIP 1002 *@rush.mediatrix.com MGCP 1.0
200 1002 OK
RSIP 1001 *@rush.mediatrix.com MGCP 1.0
RSIP 1003 *@rush.mediatrix.com MGCP 1.0
200 1003 OK
etc.
MGC
Port 2727
Gateway
Port 2427
Note: The following parameters also apply if the unit is running the NCS signalling protocol.
Standards Supported • RFC 3264 – An Offer/Answer Model with the Session
Description Protocol (SDP)