AT&T System 85 - Manual (Page 21)

CHAPTER 2. DESCRIPTION
A 4-digit extension number contains two pairs of numbers, a hundreds pair and a tens and
unit pair. For example, the extension number 4321 contains a 43 hundreds pair and a 21 tens
and unit pair.
The 18 group select buttons on the console are labeled with up to 18 different hundreds
pairs. if the system has more than 1800 different hundreds pairs (1800 lines), refer to the
operational procedure entitled “Extended Direct Extension Selection (DXS)" that is listed
under the feature “Attendant DXS With BLF” for step-by-step instructions on how to call
extension numbers by pressing DXS buttons.
The 100 buttons in the DXS/BLF are labeled 00 to 99.
To determine the idle/busy status of extension 1121, press the group select button labeled
11xx. Then, look at the light to the left of the DXS button labeled 21. If the light is dark, the
extension is idle. Now, you can extend or complete a call to extension number 1121.
If the BLF is lighted and extension number 1121 is assigned to a multi-appearance voice
terminal, you can still forward the call by pressing the appropriate DXS button. Extension
number 1121, in this case, may be active, but another call appearance of extension number
1121 may be idle.
The DXS buttons and the BLF are inoperative in a Distributed Communication System (DCS)
except when the attendant originates or extends calls within the local system.
b
RECORDING CALL INFORMATION
If the Call Detail Recording and Reporting (CDRR) feature or the Station Message Detail
Recording (SMDR) feature is assigned on a trunk group basis in your system, you may be
required to charge outgoing calls on certain trunks to an account number. You can charge to
an account number by dialing a CDRR or SMDR account number access code and an
account charge number. The procedure is the same for either feature.
Instructions in this guide are written for CDRR.
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