Specifications

RoadRunner USERS GUIDE

Northern Telecomm DMS-100 BC-35 National ISDN 1

Request from the telephone companies a National ISDN 1 ISDN line with

2B1Q line code. Your ISDN line must be configured to allow circuit

switched data on both B-channels and signaling on the D-channel. The

telephone company should supply you with a separate telephone number

and SPID (Service Profile Identification) for each B-channel; however, it

will physically be only one ISDN line. Request that the Telephone

Company program your ISDN line with the following attributes:

B1 and B2 should be set as follows:

• Set the circuit switch option to Yes; set the barrier restriction option

to no packet mode data (NOPMD) only (this tells the switch that

you require circuit switch ability on your B-channel, The bearer

restriction on your line means that you are not allowed packet data

on your B-channel.)

• Set protocol to function version 2; (PVC2) (this tells the switch that

your CPE software is using National ISDN 1 protocol.)

• Set the service profile identification (SPID) suffix to 1 (this tells the

switch that the digit following your telephone number will be 1. The

SPID format is area code + 7 digit number + 1 + 00.

• Set the Terminal Endpoint Identifier (TEI) to Dynamic (this tells the

switch that you can accept any TEI value from 64 to 126.)

• Set Ring to Yes (this tells the switch to send an alerting message to your

CPE when there is an incoming call.)

• Set the maximum keys to 10 (this tells the switch how much memory to

allocate for features.)

• Set Key system (EKTS) option to No (this tells the switch that you are

not a key system.)

• Place the lower layer compatibility option for data on the B-channels

(this tells the switch that your CPE may utilize the lower layer

compatibility information element for data on the B-channels.)

• Place calling subaddress option for data on the B-channels (this tells the

switch that your CPE will send a subaddress.)

• Place called subaddress option for data on the B-channels (this tells the

switch that your CPE can receive a subaddress.)

The Telephone Company will also need to know any additional data

features that you require on your ISDN lines.

FAX-PAGE 4