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Configuring the H.323 Gateway

Release 12.0(7)XK

Enabling VoIP Gateway Functionality

Enable VoIP gateway functionality by using the gateway command.

To enable gateway functionality, use the following commands:

Conﬁguring Gateway Interface Parameters

The nextstep in conﬁguring an H.323 gatewayis to conﬁgure the gatewayinterfaceparameters.First

deﬁne which interface will be presented to the VoIP network as this gateway’s H.323 interface. Only

one interface is allowed to be the gateway interface. You can select either the interface that is

connected to the gatekeeper or a loopback interface. The interfacethat isconnected to the gatekeeper

is usually a LAN interface (for example, Fast Ethernet, Ethernet, FDDI, or Token Ring).

After you deﬁne the gateway interface, conﬁgure the gateway to discover the gatekeeper either

through multicasting or by directing it to a speciﬁc host. Then conﬁgure the gateway’s H.323

identiﬁcation number and any technology preﬁxes that this gateway should register with the

gatekeeper.

To deﬁne the interface to be used as the H.323 gateway interface and conﬁgure the H.323 gateway

interface parameters, use the following commands, beginning in global conﬁguration mode:

Step Command Purpose

router# configure terminal

Enter global conﬁguration mode.

router(config)# gateway

Enable the VoIP gateway.

Step Command Purpose

router(config)# interface

type slot/port

Enter interface conﬁguration mode to conﬁgure parameters for

the speciﬁed interface.

router(config-if)# ip address

ip-address

subnet-mask

Specify the IP address for this interface.

router(config-if)#h323-gateway voip interface

Designate this interface as the H.323 gateway interface.

router(config-if)#h323-gateway voip h323-id

interface-id

Specify an H.323 name (ID) for the gateway associated with this

interface. This ID is used by this gateway when this gateway

communicates with the gatekeeper. Usually, this H.323 ID is the

name given to the gateway with the gatekeeper domain name

appended to the end.

router(config-if)#h323-gateway voip id

gatekeeper

{ipaddr

ip-address

[

port

]| multicast}

Specify the name (ID) of the gatekeeper associated with this

gateway and how the gateway ﬁnds it. The gatekeeper ID

conﬁgured here must exactly match the gatekeeper ID in the

gatekeeper conﬁguration. The gateway determines the location of

the gateway in one of two ways: either by a deﬁned IP address or

through multicast.

router(config-if)#h323-gateway voip tech-prefix

prefix

Specify a technology preﬁx. A technology preﬁx is used to

identify a type of service that this gateway is capable of

providing.

Note If a gateway is capable of handling multiple services,

specify each service with a tech-preﬁx command.

router(config-if)#exit

Exit interface conﬁguration mode.

router(config)#exit

Exit global conﬁguration mode.

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Cisco MC3810 Guía de instalación Pagina 28

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