Operating instructions

Issue 1.0 March, 2006

General Description – Introduction

The General Description section contains an easy to understand overview of the TransTel

TD-1648i/TDS-600

ISDN Digital Telephone System. It is the intent of this document to provide both technical and non technical

readers with information pertaining to the system building blocks, capabilities, key highlights, electrical, physical

and environmental characteristics of the TransTel TD-1648i/TDS-600 ISDN Digital Telephone System.

FCC Rules and Regulation

In compliance with the requirements of Part 68 of the Federal Communications Commission Rules and

Regulations for connection of terminal system equipment to the telephone network and for your convenience, the

following information is presented.

FCC Registration Number

The TransTel TD-1648i/TDS-600 is registered with the FCC in a dual registration capacity enabling the system

to operate as a key system only or as a hybrid system. The FCC Registration Numbers are 3A7KF03BGDS600

for key systems registration and 3A7MF03BGDS600 for hybrid operation.

Ringer Equivalence Number

Ringer Equivalence

0.3B.

Notification of the Telephone Company

Customers connecting terminal equipment to the telephone network shall, upon request of the

Telephone Company, inform the Telephone Company of the particular line(s) to which such

connection is made, the FCC registration number and ringer equivalence number (REN) of

the registered terminal equipment.

The REN is useful to determine the quantity of devices you may connect to your telephone

line and still have all of those devices ring when your telephone number is called. In most,

but not all areas, the sum of the REN's of all devices connected to one line should not exceed

five (5.0). To be certain of the number of devices you may connect to your line, as

determined by the REN, you should contact your local telephone company to determine the

maximum REN for your calling area.

This equipment is capable of providing users access to Interstate providers of operator

services through the use of access codes. Modification of this equipment by call aggregators

to block access dialing codes is a violation of the Telephone Operator Consumers Act of

1990.

Direct Connection to a Party-Line or Coin Operated Telephone Line is Prohibited.

Incidence of Harm to the Telephone Lines

Should terminal equipment cause harm to the Telephone Network, the Telephone Company shall, where

practical, notify the customer that service may be temporarily discontinued. However, where prior notice is not

practical, the Telephone Company may temporarily discontinue service, if such action is reasonable in the

circumstances. In case of such un-notified temporary discontinuance of service, the Telephone Company

shall:

(a) Promptly notify the customer of such temporary discontinuance of service.

(b) Afford the customer the opportunity to correct the situation which gave rise to the temporary

discontinuance.

set out in Subpart E of Part 68 of FCC Telephone Equipment Rules.