Installation guide

SIP Trunks Trunk Planning and Ordering
5
ShoreTel 14.2 Planning and Installation Guide 93
The ShoreTel Voice Switches support PRI signaling using Euro-ISDN as well as other international
protocols. See International Planning and Installation on page 369.
SIP Trunks
SIP trunks are flexible trunks that support both inbound and outbound calls. SIP trunks are logical
trunk end points that only handle SIP call control. Media flows directly between the call initiator and the
call terminator.
SIP trunks support the following:
 Inbound calls
 Outbound calls
 Extension, Tandem, and default destinations for inbound calls
 Caller ID name
 Caller ID number
 DID
 DNIS
By default, the Enable SIP Info for G711 DTMF signaling check box is not selected. This check box
must be enabled for ShoreTel-to-ShoreTel SIP tie trunks or for SIP devices that do not support RFC
2833 for G711.
Understanding Trunk Features
The ShoreTel system supports several different trunk types and trunk features. It is very important to
understand the features available on these trunks, since some services are mutually exclusive. Table
20 shows each trunk type and the associated features.
Table 20: Trunk Features
Feature
Analog
Loop-
Start
N.Am.
Analog
Loop-
Start
EMEA
Digital
Loop-
Start
Analog
Wink-
Start
Digital
Wink-
Start
T1
PRI
E1
PRI
SIP BRI
Inbound:
Caller ID Number Yes No Yes Yes Yes Yes Yes Yes Yes
Caller ID Name Yes No Yes No No Yes Yes Yes Yes
Direct Inward Dial (DID) No No No Yes Yes Yes Yes Yes Yes
Dialed Number
Identification Service
(DNIS)
No No No Yes Yes Yes Yes Yes Yes