Specifications

Mediatrix 4100 85
C HAPTER
5
NCS Protocol Features
This chapter describes how to set information exclusive to the Network-based Call Signalling (NCS) protocol.
It assumes that the Mediatrix 4100 unit currently runs the NCS protocol or that you will switch the unit to this
protocol.
The NCS signalling programs and information are defined in a NCS stack. This includes Call Agent information
and addresses, media package settings, etc.
Introduction
When the Mediatrix 4100 runs the NCS protocol, it uses the ncsMIB. This MIB is located in the Media5 MIB
architecture.
 To use the NCS MIB
1. In the telephonyMIB, locate the telephonyIpSignalingProtocolSelection variable.
This variable allows you to switch from one protocol to another.
2. Set the telephonyIpSignalingProtocolSelection variable to NCS.
The default value is MGCP.
3. Restart the Mediatrix 4100.
After the unit restarts, it uses the selected protocol.
NCS Information
The Mediatrix 4100 uses the PacketCable™ network-based call signaling (NCS) protocol specification (March
12, 1999). NCS is a profile of the Media Gateway Control Protocol (MGCP). The Mediatrix 4100 is used with
any NCS Call Agent (also known as Connection Manager), which manages calls from and to the Mediatrix
4100.
Services Provided
The Mediatrix 4100 uses the services provided by the Call Agent. See your Call Agent documentation for more
information.