Specifications

Setting Call Control Options
9 – 16 ShoreTel, Inc.
This lets you manage trunk-to-trunk transfers when the
Allow Trunk-to-Trunk Transfer parameter is enabled on
the Telephone Features Permissions class of service edit
page. The field is defined in the section called “Telephony
Features Permissions” on page 10-3.
The ShoreTel system supports trunk-to-trunk transfers,
which allow a user to transfer an external caller to an
external number. Since this feature can lead to unwanted
toll charges, the system also supports a class of service
permission that only grants this feature to selected user
groups. To grant this permission, you enable the Allow
Trunk-to-Trunk Transfer parameter on the Telephone
Features Permissions class of service edit page.
Users with trunk-to-trunk transfer permission might
accidently transfer an external caller to an external number
without realizing it. This can lead to “hung” trunks,
resulting in the inability to make outbound calls or take
inbound calls.
The ShoreTel system lets you manage trunk-to-trunk
transfers using the Call Control Options page. This lets you
eliminate unwanted trunk-to-trunk transfers while ensuring
that valid trunk-to-trunk transfers are not dropped.
The following are considered trunk-to-trunk transfers:
• A user is talking with an external party and transfers
the external party blindly or consultatively to an
external number.
• A three-party conference call is taking place with one
user and two external parties, and the user drops from
the call.
An external party forwarded to an external number by a
user’s call handling mode is not a trunk-to-trunk transfer.
Hang up after N
minute(s) of silence
Enabling this parameter automatically drops trunk-to-trunk
transfers after both parties have been silent for the defined
time period. The default time period is 60 minutes.
Hang up after N
minutes
Enabling this parameter automatically hangs up the trunk-
to-trunk transfer after the defined time period. This
parameter should be set only as a last resort, and set for a long
time period. The default time period is 480 minutes.