Specifications

Trunk Planning and Ordering
5 – 2 ShoreTel, Inc.
Reviewing and Selecting Trunk Types
Trunks provide a connection from the ShoreTel 6.1 system to a service provider for the
purpose of making and taking calls to and from external parties.
The ShoreTel 6.1 system supports seven different ShoreGear voice switches and six
different trunk types tailored for specific applications. Table 5-1 shows which trunk
types are supported on which voice switch. The next section provides more detailed
information about the various trunk features.
Analog Loop-Start Trunks
Analog loop-start trunks are supported on the ShoreGear-120/24, ShoreGear-40/8,
ShoreGear-60/12, and ShoreGear-Teleworker voice switches. These trunks are typically
used for inbound calls to a main telephone number that are directed to an auto-
attendant menu, company operator, or workgroup. A caller can route a call from the
auto-attendant to a user extension by entering the extension number or by spelling the
user’s name from the telephone keypad. Analog loop-start trunks are also used to make
outbound calls.
Analog loop-start trunks support:
• Inbound calls
• Outbound calls
• Caller ID number
• Caller ID name
• Caller ID blocking
Analog provisioning is provided by the loop-start protocol and Dual-Tone Multi-
Frequency (DTMF) signaling.
Analog loop-start trunks are used to provide power-fail transfer to selected
telephones—for instance, to the operator, security station, executives, and so on. When
there is a complete power failure, including loss of UPS power backup, ports 8 and 9 on
the ShoreGear-120/24 and ShoreGear-60/12, ports 4 and 5 on the ShoreGear-40/8, and
ports 1 and 2 on the ShoreGear-Teleworker and ShoreGear-12 (IPBX-12) will be
connected through a power-fail transfer feature. This provides a dial tone for making
and taking critical calls in the event of power failure.
NOTE Centrex lines are analog lines that can be used as analog loop-start trunks on the
ShoreGear-120/24, ShoreGear-40/8, ShoreGear-60/12, and ShoreGear-
Table 5-1 Supported Trunk Types
Voice Switch
Analog
Loop-
Start
Digital
Loop-
Start
Analog
Wink-
Start
Digital
Wink-
Start
T1
PRI
E1
PRI
SIP
ShoreGear-120/24
Yes No Yes No No No Yes
ShoreGear-60/12
Yes No Yes No No No Yes
ShoreGear-40/8
Yes No Yes No No No Yes
ShoreGear-12 (IPBX-12)
Yes No Yes No No No No
ShoreGear-Teleworker
Yes No Yes No No No No
ShoreGear-T1
No Ye s No Yes Yes No No
ShoreGear-E1
No No No No No Yes No