Instruction manual

Troubleshooting and Repair
025-9416 127
Software Step LEDs Light Activity
ACT on for pulse and during DTMF digit decoding
ANS on for trunk answer
blinks for DID DTMF
Active telco call active trunk (A-D):
LINE, ANS
solid on
ACT on when receiving FROM TEL audio
Active paging ANA PTT on when transmitting paging tones or voice
DIG PTT on when transmitting binary digital paging data
BUSY on if radio station is already active (in cross-busy
applications)
Modem ZLINK
active
MODEM
solid on or rapid flickering during modem data transfer
between PC and Model 640
short flashes every 3 seconds when link is active, but
data is not transferring
Local ZLINK active COM
solid on or rapid flickering during serial data transfer
between PC and Model 640
short flashes every 3 seconds when link is active, but
data is not transferring
PROGRESS TONES
The progress tones output by the Model 640 provide valuable clues about the paging process. If
the system operator is familiar with the tones, troubleshooting the paging terminal is vastly
simplified. Table 22 describes each progress tone issued by the paging terminal and when it
plays.
Table 22. Troubleshooting Progress Tones
Audible Tones Frequencies Cadence Indicated Activity
beep 1000 Hz 700 msec Prompt to enter pager # for end-to-end or
voice message
ring 440 + 480 Hz on - 2 secs
off - 2 secs
Connecting to terminal, please wait
di di dit 1000 Hz di - 50 msec
off - 50 msec
Prompt to enter a numeric display message
or FunctionCode
dah di di di dit 1000 Hz dah - 250 msec
off - 35 msec
di - 35 msec
Prompt for subscriber’s SecurityCode