Troubleshooting
Always clear connections and procedures established by the diagnostic by resetting the
system or issuing the appropriate disconnect commands.
LL = Link Number (00 to 15). Upon #73 initiation, this is the link used by the test phone
and its receiver. They will remain in this link. If the displayed link number is changed, all
future connect commands use the new link number. This allows connecting two phones to a
link which is not the test phone link and enables communication which is Inaudible to the
test phone or its receiver.
This display field also changes while checking in-use lines for audio and so forth. The link
number of the in-use line will be displayed when the test phone is connected to it, using the
connect command key [ 1]. The test phone link number will reappear upon return to the test
link.
v =
Activate VCM Intercom. This display indicates that there is a minimum speaker load
across the VCMs terminals, making it active. The V field information was not available prior to
version 102 software. To see the V displayed, select an SC25 line with a speaker and send the
relay on command (press key [2]). Then, send the relay off command (press key [5]) and the
V will disappear.
HT = Hook switch (H) and Call-in switch (T) status for the Subject line. This field will
display some combination of two characters from the following lists (e.g.: +R).
H = Hook switch status character will be , -, or N:
+
= An off-hook is detected for the Subject line.
- = An on-hook is detected for the Subject line.
N =
No LLM or no line hybrid is detected on for the subject line.
T = Call-in Switch status character will be either G, R, or N:
G = A ground is detected on the SC25 T (call-In) terminal.
R = A resistor ground is detected on the T terminal
N = No connection is detected on the T terminal
The HT display field status indicators represent external inputs to the TCIV. They do not
indicate whether the associated line is in use. In some cases service requests are ignored by
the system (e.g.: NNNN > 5 11) and in some cases service is provided without a service
request (e.g. most in-use C.O. trunks will not show +).
A two-digit hexadecimal figure will appear in the HT field in software versions prior to version
102. A table for Interpreting these hexadecimal values is provided with the procedures for
performing Line Type Tests. This information can be derived from Drawing KC1461.
AA = Number of Active Lines in the system (0 - 64). The probability that using the diag-
nostic will interfere with traffic increases directly with the number of lines in use.
1989 Rauland-Borg Corporation (Orig. 10/88; Rev. l/89)
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