ZETRON 748, Technical Manual

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Feature Set Reference
130 025-9368H
Hookflash Mode
The Model 748 can support the mobile in performing a hookflash on the current line once in the
conversation mode. One of the more typical installations where hookflash is used is on PBX
installations. This is enabled on a per user basis. On PSTN calls a user's
Toll restrict type must be set
to “None” for access to hookflash to work. On PBX calls, a user's Toll restrict type can be set to
anything except “AutoD” for access to hookflash to work. It is initiated by the mobile sending a
DTMF “*0” while in conversation mode. The Model 748 then does a “flash”, or “breaks” the loop
current for 90 milliseconds. What happens next is based on whether the call is internal PBX call or a
PSTN call.
On PSTN calls, the Model 748 temporarily enables DTMF regeneration. While in the temporary
regenerate mode, all digits decoded from the mobile will be regenerated to the phone (0 to 9, A to D,
#). Once a hookflash has been performed, the mobile has two times the programmed
DTMF
interdigit time in which to dial the first digit. This is used to control staying in the regenerate mode.
After the first digit has been dialed, the specified DTMF interdigit time is used. Allowing the
interdigit time to expire or sending a DTMF “*” will turn off the regeneration at any time. If
disconnect on second dial tone is enabled (the default condition), the Model 748 will ignore dial tone
from the telco line immediately after a hookflash.
On internal PBX calls, only a hookflash is performed and the Model 748 returns immediately to the
conversation mode. Since all DTMF is passed thought from the mobile, there is no need to stay in
the regenerate mode.
How to program it:
Access the Model 748 through your direct connected PC or terminal, or remotely from your PC
connected to a modem via the Model 748's internal modem.
Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press
ENTER
,
and the Interconnect Menu will appear. Type “3” and press ENTER , the User Menu will be
displayed using the currently selected user's data. Select the User number you wish to program (see
“User Range” later in this section). Select the item number for
Hookflash mode and press
ENTER
.
The currently selected mode or state will be shown along with a message instructing you to press the
space bar to change the mode or state, and to press
ENTER
to accept the current mode or state. Each
time the space bar is pressed, the mode or state changes. Once the mode or state you desire is
displayed, press
ENTER to accept it. Note that if you accidentally pass the mode or state you want,
keep pressing the space bar and the Model 748 will wrap around (when the last choice is displayed,
it will return to the first one).
The default setting for Hookflash mode is “Disabled” for all users. Hookflash mode is supported by
block or range programming. See “User Range” later in this section for details.