Chapter 12: Connect Pri Gateway Components; Introduction - Avaya Communication Server 1000 Installation And Commissioning Manual

Chapter 12: Connect PRI Gateway
This chapter contains information about the following topics:
•

Introduction

on page 63
• Media Gateway Controller network connections
• ELAN and TLAN subnet connections
Introduction
The PRI Gateway with Media Gateway Controller (MGC) communicates with the Call Server
using the built-in 100BaseT network interface on the MGC.
Three network interface ports on the MGC can be used for connecting to the ELAN subnet:
two for use by the dual-homing feature and one for a direct connection to the E1/T1 card.
The E1/T1 card serves four to eight spans and is a motherboard to the NTBK51AA/
NTBK51AAE5/NTBK51CAE5 (and later) downloadable D-channel handler and the NTAK93AB
D-channel handler. The E1/T1 card requires the lower slot on the 19-inch 2u chassis. The
upper slot is reserved for the MGC.
The MGC can be connected to a Layer 2 switch to handle signaling between the Call Server
and the PRI Gateway. If two of the ELAN network interfaces of the MGC are connected to
separate Layer 2 switches, the PRI Gateway can remain operational in the event of a failure
of one of the Layer 2 switches.
The PRI Gateway must have data network connectivity to the ELAN network interface of the
Call Server. For more information about the engineering of the data network, see Converging
the Data Network with VoIP Fundamentals, NN43001–260.
By default, the PRI Gateway with the MGC supports autonegotiate mode on the embedded
network interfaces; the networking equipment to which they are connected must be configured
as autonegotiate. If the MGC network interfaces do not autonegotiate to 100 Mb full-duplex,
an alarm is generated as issues could arise if the speed is not 100 Mb and if the duplex is only
half. See Media Gateway Controller system alarms, events, and messages
a list of all system messages. A CLI command is also available on the MGC to turn off auto-
negotiation for the embedded network interfaces, which configures the interfaces to 100 MB
full-duplex. No other speed or duplex options are available on the MGC.
Media Gateway 1000E PRI Gateway Installation and Commissioning
components
on page 67
on page 64
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