Mitel 3000 Installation And Maintenance Manual

Mitel 3000
Installation & Maintenance Manual
42
Programming required for T1 PRI (ISDN)
The default programming of the T1/E1 PRI Module is that it is set as T1 (RBS). The programming must be
changed to provide a PRI circuit. This programming is described on page
109.
Changing from T1 (RBS) to PRI (ISDN) and vice versa only takes effect when the switch is
reset. If you go on hook at the programming position after changing the setting, the switch will
automatically reset. You can also reset the switch by pressing the reset button.
Programming the Q 931 protocol on PRI (ISDN)
Two ISDN protocols are provided in the switch, National ISDN 2 and 5ESS.
The default setting is National ISDN 2. The programming is described on page
114.
Recommended PRI ISDN Protocol settings:
EXCHANGE EQUIPMENT (TELCO)
TRANSLATION PROTOCOL
MITEL 3000 ISDN Q931 Protocol
AT&T 5ESS (AT&T Custom) AT&T 5ESS (Custom)
AT&T 4ESS (AT&T Custom) AT&T 5ESS (Custom)
NORTEL CUSTOM (DMS Exchanges) See note NATIONAL ISDN 2
NATIONAL ISDN 1 (DMS Exchanges) See note NATIONAL ISDN 2
NATIONAL ISDN 2 NATIONAL ISDN 2
NOTE: The DMS Exchange equipment or DMS Central Office (ONLY) must have the LT1 flag under the trunk
sub group programmed to YES to avoid issues. See page 46 for a fuller description of the LT1 issues.
Changing the Q931 protocol only takes effect when the switch is reset. If you go on hook at the
programming position after changing the setting, the switch will automatically reset. You can
also reset the switch by pressing the reset button.
Line Build Out programming on PRI (ISDN)
The Line build can be set at 0 dB, -7.5 dB, -15 dB and -22.5 dB. The default setting is -7.5 dB. The setting
depends on how far it is to the first repeater on the span. The programming is described on page
113.
Changes to the Line Build Out only take effect when the switch is reset. If you go on hook at the
programming position after changing the setting, the switch will automatically reset. You can
also reset the switch by pressing the reset button.
Line Gain programming for PRI (ISDN)
The Line Gain can be adjusted for the full PRI; it changes the gain for all channels. If calls are giving an echo
then the gain should be adjusted down to reduce it. There are three settings provided, low (-9 dB), medium (-
6dB) and high (-3dB). The default setting is high. See the programming on page
113.
Low is the recommended receive setting as specified in EIA 464C. Medium is the recommended value in EIA
464B.
Additional programming options for T1 PRI (ISDN)
There are two additional programming options that can be set when the T1/E1 PRI Module is programmed as
PRI.

Mitel 3000 Specifications

General

Brand	Mitel
Model	3000
Category	Telephone System
Language	English