Specifications

Configuring Trunks
ShoreTel 7.5 Administration Guide 7 – 5
The parameters are defined as follows:
Name This is the name of the new or existing trunk group.
Site The Name of the site of the trunk group is displayed.
Language Select the language for the trunk group from the drop-down
list.
Teleworkers Note: This parameter only appears when editing SIP trunk
groups.
When this check box is enabled, third-party SIP devices will
use the public network for transmitting audio on intersite
calls, while the signaling will use intersite bandwidth. If not
selected, the call audio will use intersite bandwidth.
Enable SIP Info for
G.711 DTMF
Signaling
Note: This parameter only appears when editing SIP trunk
groups.
Enable this check box when using third-party SIP devices that
do not support DTMF negotiation via RFC 2833. If the device
does not support RFC 2833 and this check box is not enabled,
DTMF negotiation will fail.
Enable Digest
Authentication
Note: This parameter only appears when editing SIP trunk
groups.
Enable this check box when using dynamic SIP trunks to
provide enhanced security via User ID and Password
authentication.
• User ID—This is the user ID associated with the third-
party SIP device.
• Password—This is the password associated with the third-
party SIP device.
Inbound Settings
The Inbound settings let you route inbound calls to a single
destination, or route calls to a specific destination using DID
and DNIS digits.
Number of Digits
from the CO
This specifies the maximum number of digits expected from
the central office (for User PRI configured trunks). Digit
collection terminates when the maximum number of digits are
received, when the digit collection time-out is reached, or
when an exact match is found.
Network PRI trunks connected to legacy PBXs collect digits
from the legacy PBX side. When the ShoreTel system detects a
trunk access code, it ignores the Number of Digits from the
CO parameter and routes the call according to the dialing plan.
DNIS When DNIS is checked, click Edit DNIS Map to add or delete
entries in the DNIS Map.