Cisco WS-X4604-GWY - VoIP Gateway Specifikace stáhnout pdf (Strana 94)

5-20

Cisco Catalyst 4000 Access Gateway Module Installation and Configuration Note

OL-3008-01

Chapter 5 Configuring the Voice Interfaces

ISDN BRI Configuration (H.323)

Defining ISDN Service Profile Identifiers

Some service providers assign service profile identifiers (SPIDs) to define the services to which an ISDN

device subscribes. If your service provider requires SPIDs, your ISDN device cannot place or receive

calls until it sends a valid SPID to the service provider when initializing the connection. A SPID is

usually a seven-digit telephone number plus some optional numbers, but service providers might use

different numbering schemes. SPIDs have significance at the local access ISDN interface only; remote

AGMs are never sent the SPID.

Currently, only DMS-100 and NI-1 switch types require SPIDs. Two SPIDs are assigned for the

DMS-100 switch type, one for each B channel. The AT&T 5ESS switch type might support SPIDs, but

Cisco recommends that you set up that ISDN service without SPIDs.

If your service provider assigns you SPIDs, you must define these SPIDs on the AGM. To define SPIDs

and the local directory number (LDN) on the gateway for both ISDN BRI B channels, use the following

isdn spid commands:

5ESS National ISDN

(NI-1) BRI

• Terminal type = A

• 2 B channels for voice

• 2 directory numbers assigned by service provider

• 2 SPIDs required, assigned by service provider

• Set speed for ISDN calls to 56 kbps outside local

exchange

• Directory number 1 can hunt to directory

number 2

DMS-100 BRI

• 2 B channels for voice

• 2 directory numbers assigned by service provider

• 2 SPIDs required, assigned by service provider

• Functional signaling

• Dynamic TEI

assignment

• Maximum number of keys = 64

• Release key = no, or key number = no

• Ringing indicator = no

• EKTS = no

• PVC = 2

• Request delivery of calling line ID on Centrex

lines

• Set speed for ISDN calls to 56 kbps outside local

exchange

• Directory number 1 can hunt to directory

number 2

1. Service profile identifier

2. Terminal endpoint identifier

Table 5-4 ISDN Provisioning by Switch Type (continued)

Switch Type Provisioning

1 2 ... 89 90 91 92 93 94 95 96 97 98 99 ... 165 166

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