Specifications

Configuring Switches
6 – 50 ShoreTel, Inc.
Type This determines the type of signaling the ShoreGear-T1 will
facilitate: T1, T1 PRI User, T1 PRI Network, T1 QSIG Master or
T1 QSIG Slave.
T1 uses in-band signaling where a portion of the bearer channel is
used for A/B bit signaling, emulating on-hook and off-hook
conditions.
T1 PRI User and T1 PRI Network (Primary Rate Interface (PRI
23B+D)) is used in conjunction with ISDN signaling
configurations. It provides a single D-channel for controlling 23
bearer channels. You can designate the T1 trunk as being User or
Network side.
The QSIG protocol handles the signaling between digital PBXs for
ISDN, handling the basic signaling functions of call setup,
handshaking, and call teardown, and thus allowing PBXs from
different third-party vendors to communicate and interoperate.
Whereas PRI employs the concept of a "user" and a "network" to
determine which network entity is controlling the D-link
channel, QSIG uses a similar "master" and "slave" concept to
determine the relationship between network elements.
Select the appropriate T1 QSIG Master or T1 QSIG Slave radio
button, depending on which type of signaling the ShoreGear-T1
will facilitate.
Central Office
Type
This provides support for the following types of Central Offices
(COs):
• DMS-100
• 4ESS
• 5ESS
• National ISDN-2 (NI-2)
Select an appropriate CO type from the drop-down list. The
default is 4ESS.
Enable Outbound
Caller Name
This sends the caller name with the caller ID for outbound calls.
The default is disabled.
Framing Format This is the ShoreGear-T1 switch’s framing format. Depending on
the type of T1 service provided by your telephone company’s CO,
select either ESF or D4.
The system default is ESF.
Line Code This is the ShoreGear-T1 switch’s line code. Depending on the
type of T1 service provided by your telephone company’s CO,
select either B8ZS or AMI.
The system default is B8ZS.