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Phone System Migration
Overview
The BMUX firefighter master phone may be replaced by the 4100-1270 “Master telephone and
Phone Card” (replacement of the BMUX firefighter master phone is not mandatory). The 4100U/
4100ES phone card is configured to generate a phone riser for distribution to the 2120
transponders.
The 2120's phone system consisted of a master telephone, audio transponders, telephone jacks,
portable phones and phone stations. The master telephone was mounted in a SCC cabinet adjacent
to the BMUX or sometimes in the BMUX cabinet itself. A local BT monitor point was used to
report a phone riser trouble. A supervised control point was used to detect when a remote phone is
off-hook and to connect the phone to the common-talk phone riser. The SCC indicated phone
circuit trouble and active status, and provided circuit control switches. For more information on
the 2120 phone system, see the
2120 Multiplex Firefighter's Phone General Information Guide
(575-588)
the 4100U/4100ES Phone Riser is electrically compatible with the 2120 phone riser, the
BMUX phone replacement is straightforward. The phone handsets and remote stations used in
2120 systems is the same as those used in the 4100U/4100ES.
With the exception of the End-of-line resistor, no changes are required to the 4100U/4100ES
phone card hardware or firmware to support a 2120 phone riser.
The phone to speaker paging feature of the 2120 is not supported; this feature is not Agency
Listed.
For more information on the phone system upgrades, see the
2120 BMUX to 4100U Migration
Guide
(579-824). The information also applies to the 4100ES.
.
Compatibility
The 4100U/4100ES BMUX replacement phone riser is compatible with the following equipment:
• 562-279 2120 Audio Relay Board-10k EOLR (See page 9 of MUX2-11-008 Ed 2 87 for wiring
information)
• 562-589: 2120 Audio Relay Board- 3.3k EOLR (See page 9 of MUX2-11-008 Ed 2 87 for
wiring)
• 562-450: 2120 ET Audio relay board (See page 19 of MUX2-11-008 Ed 2 87 for wiring
information)
• 566-594: Signal ZAM (See page 28 of MUX2-11-008 Ed 2 87 for wiring information)
• 566-617: Class A Signal ZAM (See page 30 of MUX2-11-008 Ed 2 87 for wiring information)
Installation
Steps
1. Install the phone card into the 4100U/4100ES (see the
Fire Fighter Phone System Installation
Instructions
(579-226)).
2. Re-wire the riser to the 4100U/4100ES phone card (see the
Fire Fighter Phone System
Installation Instructions
(579-226)).
3. Locate and replace the riser's EOLR with Simplex part # 733-894 (10K).
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Summary of Contents for 4100-6065
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