Multi-Tech Systems MTA128NT 用户手册

This section guides you and your telephone company in specifying and obtaining ISDN service when IOCs
are not used.   To support most ISDN TA features, your telephone service must meet certain requirements.
These requirements are described in the following sections.  Some features may be added or deleted,
depending on your actual data service needs and availability in your area.  Before ordering, talk to your
telephone company about which of the services listed on the following pages are provided in your area.

The following form was created for you to complete and fax to your telephone company to request the
proper ISDN line for use with your ISDN TA module.

Name:______________________________________________________
Address:____________________________________________________

City:  _______________________________   State:_________________ ZIP Code:  __________

Daytime Telephone Number:_______________

1.  Request an ISDN BRI (Basic Rate Interface) line with:

•  U-Interface Reference Point, and

•  2B1Q Line Coding.

2.  Choose one of the following:

___  2B+D Service (supports up to 128K bps), or

___  1B+D Service (supports up to 64K bps).

3.  Indicate the ISDN Switch Type and Software Protocol you will be using:

___  AT&T 5ESS, with:

___  Custom,

___  5E6 and later software, or

___  NI1 (National ISDN-1).

___  Northern Telecom DMS-100, with:

___  BCS-32 and later software (Pvc1), or

___  National ISDN-1 (Pvc2).

___  Siemens EWSD with National ISDN-1

4. Request that the ISDN line you are ordering allocates one dynamic TEI (Terminal Endpoint Identifier) per

phone number.

5.  Order specific services for your particular ISDN Switch:

5a.   AT&T 5ESS:  request a line with:

Feature:  Value
B1 Service:   DMD (On Demand)
B2 Service:   DMD (only if 2B+D ordered)
Data Line Class:   PM (Point-to-MultiPoint)
Maximum B Channels:  2 (if 2B+D) or  1 (if 1B+D)
Circuit Switched Voice (CSV) Bearer Channels:  Any
CSV Calls:   1 (recommended for test purposes)
Number of Circuit Switched Data (CSD) Bearer Channels:  Any
Number of CSD Calls:   2 (if 2B+D ordered), or 1 (if 1B+D ordered)
Terminal Type:   Type A