Specifications

Configuring Trunks
ShoreTel 7.5 Administration Guide 7 – 17
Centrex Flash
Centrex Flash can be programmed on one of the custom buttons, allowing users to
transfer the call to another number. When the custom button is pressed, a flash is
generated on the current call, dial tone is presented by the central office (CO), and the
user can dial any PSTN number. When ring-back is heard, the handset can be hung up
to complete the transfer.
Note that the user will be connected directly to the central office, so there will be no
access code required, no permissions checking, no account code support, and no CDR
logging of the second call.
Centrex Flash is useful in branch offices or small office environments with a limited
number of analog Centrex lines. If an external caller needs to be transferred to an
external number, the two trunks will be cleared, instead of quickly busying out the
trunks after a few transfers. In this manner, the feature reduces the number of physical
trunks needed to transfer calls, since no trunks are in use after the transfer is
completed.
Details:
• Centrex transfer is supported only on analog loop-start trunks. If the call is not on
an analog loop-start trunk, the operation will have no effect.
• The trunk on which the call exists must be configured on one of the following
switches:
• ShoreGear 40/8
• ShoreGear 60/12
• ShoreGear 120/24
• ShoreGear-E1
• ShoreGear-T1
• The feature replaces a trunk-to-trunk transfer in which two trunks are tied up for
the duration of the call.
• The current call must be connected and also must be a two-party call.
For information on configuring Centrex Flash, please see “Programmable IP Phone
Buttons” on page 10-42.