Troubleshooting
Step 2.
Refer to the following explanations of key functions and the
keypad
illustration on the following page
and perform keystrokes as required.
Function:
[1]
Connect the line associated with the Subject physical number (NNNN) to the LLM link (LL). If
the subject line is on-hook, the LLM will send a single ring burst to the phone.
[1]
Connect the Test Phone and its receiver to the link being used by the display line. This will
enable monitoring of ongoing voice and audio for test purposes. If a conversation is inter-
rupted, announce testing and press [4] immediatly to return to the test link.
[2]
Turn on a speaker relay associated with the displayed physical number. If a speaker is at-
tached, this will connect the VCM (intercom amplifier) to the speaker’s terminals on the SC25
and a
V
will appear in the display.
To hear the VCM, connect the telephone end of the VCM to the same link as the talk/listen
phone. Typically, the VCM is connected to line 2.
[3]
Connect
the single link staff phone relay. This will connect the specified single link
staff
phone to the LLM line which is shared by all single link staff phones.
[4]
If the LLM line is not in-use, it will be disconnected from a connection ma& with the #73 di-
agnostic.
[4]
If the displayed LLM line is in-use, the test phone and its receiver will be disconnected from it
and reconnected to the test link.
[5]
[6]
Turn off the speaker relay.
Disconnect the single link staff phone relay. This will disconnect the specified single link staff
phone from the LLM line which is shared by all single link staff phones.
[7]
Increment the NNNN display field to the next higher physical number.
If the last keystroke before doing this was 1, 2, or 3, a null active list record is invoked to
block the main programs normal scanning function for this line. This will prevent the system
from producing dial tone or call-ins and so forth, allowing lines to be connected and exer-
cised without disturbance from main system functions.
[8]
[9]
[0]
[*]
[#]
[#]
Increment the LL display field to the next higher link number. This will change the default
link used when an LLM connection is made. The new link becomes the default link
Start a 941 Hz tone signal which is on for 5 seconds and off for 5 seconds. This tone may be
used for crosstalk, signal to noise ratio, and loss measurements.
Decrement the LL display field to the next lower link number. This will change the default
link used when an LLM connection is made. The new link becomes the default link.
Decrement the NNNN display field to the next lower physical number.
Comments under [7] apply here also.
Stop the 941 Hz tone.
If the 941 Hz tone is off, the # DTMF tone will be produced and can be used for making
measurements.
Page 4 of 30 1989 Rauland-Borg Corporation (Orig. 10/88; Rev. l/89)
