Instruction manual

ACU-1000 Operations Manual
Interoperability Now 2-103
2.17.3.7 VOX Threshold
This command setting determines the sensitivity of the PSTN module VOX. To be sure to
avoid missing speech, the factory default setting is Low Threshold, which provides maximum
sensitivity. There may be instances where less sensitivity is desired (for example if excessive if
background noise is present).
The factory default setting is for Low Threshold.
2.17.3.8 VOX Hang Time
VOX hang time determines how long the VOX stays active after speech disappears. This keeps
radios that are communicating with the PSTN module from unkeying between words spoken by
the telephone caller. If too short a hangtime is set, the radios will unkey frequently and
syllables may be missed during the time it takes the transmitter to key again. Too long a
hangtime causes the party at the other end to wait unnecessarily long for the VOX to unkey
before beginning their response during the conversation.
The factory default is 1 second.
2.17.3.9 2-Wire
The PSTN module can only be configured for standard 2-Wire hybrid operation.
2.17.3.10 Module Security Level Selection
This command sets a module’s security level number, with 0 = not secure (no PIN required), 1
= least secure, up to 9 = most secure.