Version 6.6 277 October 2014
Installation & Operation Manual 31. Configuring the MGCP/MEGACO Protocols
31 Configuring the MGCP/MEGACO
Protocols
This chapter describes configuration of the MEGACO call control protocols on the
Mediant 8000. It consists of two major parts:
The first sections provide an overview of the MGCP/MEGACO protocols and
describes the corresponding Mediant 8000 configuration entities.
'Configuring MGCP/MEGACO Call Control Settings' on page 283 provides the
detailed configuration instructions.
31.1 Media Gateway Controller
The Mediant 8000 can communicate with a number of Media Gateway Controllers /
Call Agents via MGCP/MEGACO protocols. In the EMS, each Media Gateway
Controller (MGC) is represented by a MGC entity, in which a set of IP addresses and
call control protocol parameters are defined.
Media Gateway boards are associated with the MGC entity. Multiple Media Gateway
boards may be associated with the same MGC entity. In this case, a single Media
Gateway Controller has control over multiple Media Gateway boards.
Multiple MGCs may be used for one of the following reasons:
Load distribution (e.g., for scalability purposes)
Traffic engineering
A mixture of call control protocols
When the MEGACO protocol is used, the Media Gateway board may be divided
into Virtual Gateways. Each Virtual Gateway may be associated with a different
MGC entity. See 'MEGACO Virtual Gateways' on page 282 for details.
31.1.1 Media Gateway Controller in the EMS
The Status of the Media Gateway Controller is represented by the standard
Operational State and Administrative State attributes:
The Operational State of an MGC entity represents the status of the MGC's
configuration inside the Media Gateway and not the real status of the Media
Gateway Controller equipment. Therefore, in a typical configuration it is Enabled
even when the Media Gateway Controller is physically disconnected from the
network.
The Administrative State of an MGC entity represents the ability to configure its
Online parameters and summarizes the Administrative State of all of the Media
Gateway boards associated with this MGC. When all of the Media Gateway
boards are Locked, the administrative status of the MGC is also Locked. When
at least one Media Gateway board is Unlocked, the administrative status of the
MGC is Unlocked.
It is impossible to directly alter the Administrative State of an MGC entity by
performing Lock or Unlock actions on it. Instead, perform the Lock or Unlock actions
on the associated Media Gateway boards and the Administrative State of the MGC
is updated accordingly.
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