63.Connect PRI Gateway componentsThis chapter contains information about the following topics:• “Introduction” (page 63)• “Media Gateway Controller network connections” (page 64)• “ELAN and TLAN subnet connections” (page 67)Introduction The PRI Gateway with Media Gateway Controller (MGC) communicateswith the Call Server using the built-in 100BaseT network interface on theMGC.Three network interface ports on the MGC can be used for connecting tothe ELAN subnet: two for use by the dual-homing feature and one for adirect connection to the E1/T1 card.The E1/T1 card serves four to eight spans and is a motherboard tothe NTBK51AA/NTBK51CA downloadable D-channel handler and theNTAK93AB D-channel handler. The E1/T1 card requires the lower slot onthe 19-inch 2u chassis. The upper slot is reserved for the MGC.The MGC can be connected to a Layer 2 switch to handle signalingbetween the Call Server and the PRI Gateway. If two of the ELAN networkinterfaces of the MGC are connected to separate Layer 2 switches, thePRI Gateway can remain operational in the event of a failure of one of theLayer 2 switches.The PRI Gateway must have data network connectivity to the ELANnetwork interface of the Call Server. For more information about theengineering of the data network, see Converging the Data Network withVoIP Fundamentals.By default, the PRI Gateway with the MGC supports autonegotiate modeon the embedded network interfaces; the networking equipment to whichthey are connected must be configured as autonegotiate. If the MGCNortel Communication Server 1000Media Gateway 1000E PRI Gateway Installation and CommissioningNN43041-311 04.01 4 June 2010Copyright © 2007-2010 Nortel Networks. All Rights Reserved.
