7.1 Configuring the VoIP PSTN Service (Based on the H.248
Protocol)
This topic describes how to configure the VoIP PSTN service on the MA5616 when the H.248
protocol is used.
Context
The voice over IP (VoIP) service uses the IP packet switching network for transmission after
the traditional analog voice signals are compressed and packetized, to reduce the cost of the
voice service.
For details about the VoIP service, see Voice in the
Feature Description
.
In the NGN network, the MA5616 functions as an access gateway (AG) and exchanges signaling
with the media gateway controller (MGC) through the media gateway control protocol (the H.
248 protocol). In this manner, the VoIP, FoIP, and MoIP services are implemented under the
control of the MGC. The MG interface, as an interface for the communication between the
MA5616 (AG) and the MGC, plays a decisive role in the VoIP service based on the H.248
protocol. Therefore, to implement the VoIP service, the MG interface must be configured and
must be in the normal state.
H.248, also called MeGaCo, is a protocol developed based on the MGCP protocol by combining
the features of other media gateway control protocols. Compared with the MGCP protocol, the
H.248 protocol supports more types of access technologies and supports mobility of terminals.
The configuration of the VoIP service based on the H.248 protocol is the same as the
configuration of the VoIP service base on the MGCP protocol.
Prerequisite
According to the actual network, a route from the MA5616 to the MGC must be configured to
ensure that the MA5616 and the MGC are reachable to each other.
Precaution
The media gateway control protocols are master/slave protocols, and the MGC controls the AG
to implement the call connection. Therefore, the data on the AG for interconnection with the
MGC, including the attributes of the MG interface and the attributes of the VoIP user, must be
consistent with the corresponding data on the MGC. Before configuring the VoIP service, you
must make the data plan by considering interconnection with the MGC.
Data preparation
provides the data plan for configuring the VoIP PSTN service.
SmartAX MA5616 Multi-service Access Module
Configuration Guide
7 Configuring the Voice Service
Issue 04 (2011-10-30)
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