ADTRAN L128 - Manual (Page 39)

Chapter 2: Installation
22 Express L128/L128T User Manual 61202.070L1-1
TELEPHONE CONNECTION (L128T ONLY)
Basic Telephone Service
The Express L128T supports an analog DTMF telephone type (AT&T 2500)
with the POTS interface, part number 1202070L2. Two telephones or other an-
alog devices (like a fax machine or modem) plug into either RJ-11 jack (labeled
with drawings of telephones) on the rear of the unit. Using a multipoint line
allows the POTS and data port to have unique phone numbers.
Supplementary Services
Supplementary services such as call holding, three- or six-way conferencing,
call transfer, and call waiting are fully supported by the Express L128/L128T
on a touch-tone telephone. Table 2-A explains how the flash-hook is used for
handling multi-call situations.
DTMF Keypad
The following functions are performed on a touch-tone phone:
• Disable call waiting: Press **0
• Enable call waiting: Press **1
• Redial last number: Press **5
• Enable ExpertISDN: Press **6
• Enter Area Code: Press **7XXX
(where XXX is a 3-digit area code.
This must be entered first, before
enabling ExpertISDN.)
• Enter Phone Number 1: Press **8XXXXXXX
(where XXXXXXX is the 7- digit
phone number. This must be entered
before enabling ExpertISDN.)
• Enter Phone Number 2: Press **9XXXXXXX
(where XXXXXXX is the 7-digit
phone number. If only one phone
number is assigned, this does not have
to be entered.)