To rack-mount a BCM50 unit (main unit or expansion unit), you need a rack-mount shelf. The
rack-mount shelf mounts in a standard 19-inch equipment rack. The BCM50 unit then clips into
the tabs on the rack-mount shelf. These tabs prevent the unit from sliding or falling off the shelf.

If the BCM50 system includes additional units, you can clip another unit to a second set of tabs on
the rack-mount shelf. You can clip additional units to tabs on the top of the other units. See the
figure

rack-mount shelf installed in equipment rack

on page 48.

Figure 18 rack-mount shelf installed in equipment rack

MWI type (see Note)

Stutter tone

Stutter tone/
Voltage MWI
(CO: 120 V)

Stutter tone/
Reverse polarity/
Voltage MWI
(CO: 120 V)

Stutter Tone/
Reverse polarity/
Voltage MWI
(PBX: 90 V)

Disconnect
supervision types

N/A

OSI EIA/TIA 464
section
4.5.10.2.4/
4.5.10.2.5.1

N/A

Note: The MWI type depends on the country profile, and the MWI voltage shown is a maximum value.

Table 5 ATA2, ASM8, ASM8+, GASM, and GASI analog device specifications (Sheet 2 of 2)

Specification

ATA2

ASM8

ASM8+

GASM

GASI