Synectix VMS Lite User Manual page 56

This method of signaling is required when the normal call transfer is done in the Blind
mode, where the Synectix VMS Lite dials the extension and hangs up. In such cases the
PBX calls the Synectix VMS Lite and sends the appropriate string to inform the unit
that this is a call that was transferred earlier and is now being transferred back to it
because the called extension was busy or there was no answer from it. The unit plays
the appropriate message back to the original caller after decoding the string sent by
the PBX.
Some PBX's use two different strings for each type i.e. two Busy strings and two no-
answer strings. In such cases, the Synectix VMS Lite provides a facility to enter an
Alternate Busy / No answer string also.
Maximum number of digits allowed = 16.
Busy String: E.g.: *52E
Alternate Busy String: E.g.: *53E
No-Answer String: E.g.: *54E
Alternate No-Answer String: E.g.: *55E
Hang-up String: This is a string that may be sent by the PBX at any time during the call
that is already in progress, to signal the Synectix VMS Lite that the caller has hung up
and hence this call may be terminated.
Example: ###.
3.4.1.7 Transfer & Retrieve Strings:
Allowed alphabets are 'e', 'p', 'h', 'a', 'b', 'c', 'd' and their capitals.
Normally, a call is transferred by hook flashing to put the caller on hold and then
dialing the extension number to which the call is to be transferred; and to retrieve this
call, hook-flash again. However, for some PBX systems, instead of hook-flashing to
transfer or retrieve a call, a string is to be dialed which may or may not include a hook
flash.
Examples:
Transfer string = *1<Hook-flash><Pause><Extn>. Enter "*1HPE"
Retrieve string for Busy = <Hook-flash>*2. Enter "H*2"
3.4.1.8 Cadence values:
Cadence values are the Timing values corresponding to the different Call Progress
patterns unique to each PBX. When the Synectix VMS Lite transfers a call to an
extension, it monitors the call progress cadences returned by the PBX and calculates
the ON / OFF timings of the signal. These timings are stored in values that are multiples
of 33 msec.
Each complete string consists of 12 digits where each value is entered as 3-digit
number in the range 001 to 255. Alphabets and special character are not allowed. The
Cadence string consists of 1st Cycle - ON, 1st Cycle - OFF, 2nd Cycle - ON, Busy and 2nd
Default = None
Synectix VMS Lite
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