Technical information

Large Business Communications Systems
4-40 Issue 7 June 2001
 Time slot test call — Connects the voice terminal user to a specific time slot
located on the Time Division Multiplex buses or out-of-service time slots.
 System tone test call — Connects the voice terminal user to specific
system tones.
To activate the feature, the Facility Test Calls access code must be assigned. It is
recommended that the access code be left
blank except when actually testing
trunks. (Do not use the default of 197.) The COR of the station user needs to have
the Facility Access Trunk Test activated on the COR form.
When properly administered by the customer, the feature enables users to
minimize the ability of unauthorized persons to gain access to the network.
However, it is the customer’s responsibility to take the appropriate steps to
properly implement the features, evaluate and administer the various restriction
levels, and protect access codes.
!
CAUTION:
In rare instances, unauthorized individuals may connect to the
telecommunications network through the use of test call features. In such
cases, applicable tariffs require that the customer pay all network charges
for traffic.
For DEFINITY ECS, DEFINITY G1, G3, and System 75, when the user’s COR
allows it, test calls can be made to access specific trunks. Do not administer this
feature unless you need it, and remove it after the test is completed. To remove
the Facility Test Calls Access Code, use the following procedures.
For DEFINiTY ECS, DEFINITY G1, G3, and System 75:
 Enter change feature-access-codes to display the FAC screen.
 Leave the Facility Test Calls Access Code field blank.
For DEFINITY G2 and System 85, calls over a dial-repeating tie line or designated
maintenance extension can make trunk verification calls. Use the following
procedure to disable this feature system-wide.
For DEFINITY G2 and System 85:
 Use PROC350 WORD2 FIELD1 = 44 to disable the Trunk Verification
Feature Dial Access Code.
 Use PROC103 WORD1 FIELD7 to disallow bridge-on for the trunk group.
To allow stations with a specified COR to perform the test, but deny the ability to
others, use the procedure below: