AT&T MERLIN LEGEND Communications System PBX System Planning Manual page 66

Trunks
Remote Access
Use these instructions only if remote users need access to the system.
Remote Access allows people to use the system from a remote location. A
person working away from the office can call into the system on one of the
trunks programmed for remote access. The system answers the call, and the
user can then do the following:
dial extension numbers directly without going through the system operator.
This means that a remote employee can call internal telephones, data
terminals, or calling groups just as if the call were being placed from an
internal telephone.
select a trunk pool, Automatic Route Selection, or special-purpose trunk,
such as WATS or FX, to make outgoing calls. If the trunk is busy, you can
specify that the remote caller is eligible for Automatic Callback. This means
the caller can remain on the call and not have to keep calling back to get an
outgoing trunk.
Note: Calls made via Remote Access to locations outside the system may
vary in transmission quality.
activate, change, or cancel the Call Forward telephone or extension number
programmed on a telephone.
Remote Access also allows remote system programming and maintenance by
AT&T or your authorized dealer.
To have Remote Access, the control unit must contain one or more 400,
400 GS/LS/TTR, 008 OPT, 800 DID, or 012 modules. These modules have
touch-tone receivers, which are required to make the Remote Access feature
work. Check the Control Unit Diagram on Form 1 to verify that one of these
types of modules is present before you begin planning Remote Access.
Note: The trunks assigned Remote Access do not have to be connected to the
module with the touch-tone receiver.
It is recommended, but not required, that Remote Access trunks appear on line
buttons on an operator console. This allows the operator to manually disconnect
a tail in case an incoming call on that trunk does not disconnect properly.
You can provide security for the system by requiring that people using Remote
Access dial a password or barrier code to call into the system. When barrier
codes are required, the caller dials a 4-digit number after the Remote Access
special dial tone. After dialing the barrier code, the caller hears the system dial
tone.
CAUTION
Under applicable tariffs, the customer is responsible for any charges
incurred through the remote use of system facilities. Precautions should be
taken to prevent unauthorized use of the system's outside lines by remote
callers, also called toll fraud. See "Customer Support Information" at the
front of this book for more information on security.
,
Trunk Options 3-11