Specifications
Peripheral Devices 
GCA39-818 Rev 3, Issue 9/01  Page 4  Printed in the USA 
Analog Terminal Interface/Off Premises Extension 
The ATI-D-1PT is a multipurpose, on-premise accessory for the digital communications system 
that enables you to connect IST devices to a digital station board. The ATI-D-1PT supports a 
wide variety of IST equipment such as 500 and 2500-type telephones, cordless telephones, 
answering machines, fax machines, data modems, and analog voice mail systems. It will accept 
both tone (DTMF) and pulse (rotary) dialing from these devices. 
The ATI-D-1PT unit contains an internal ring generator and telephone circuitry that supports 1 
IST input. The modular connectors allow for quick hookup to the digital station port and the IST 
device(s). 
The ATI-D-1PT supports a maximum ringer equivalence number (REN) of 2.0, allowing it to 
support more than 1 IST device, if they are bridged. Check the REN number of the IST 
equipment you connect so as not to exceed the capacity of the ATI-D-1PT. 
NOTE The ATI-D-1PT by itself does not support any off-premise service. Never connect the ATI-D-1PT 
to a TELCO line unless you have installed an OPX long loop adapter. 










