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Introduction
1-33000-A2-GA31-80 December 1994
Network Interface Modules (NIMs) can be installed at
the rear of the carrier (when not occupied by an Auxiliary
Backplane) to provide the PSTN (dial) or switched
56 kbps digital service interface for both DSUs and
dial/lease modems. There are nine different NIMs. For a
list of the feature/part numbers of these NIMs, see
Appendix B of this manual.
Alternatively, you can install up to two Auxiliary
Backplanes at the rear of the carrier to allow Model 3151
T1 CSUs and Model 3161 T1 DSU/CSUs to provide an
interface between a T1 digital network and Customer
Premise Equipment (CPE).
A modular DSU or dial/lease modem is a circuit card
that contains “gold finger” contacts on the rear edge of the
card and is supplied with a rear connector plate. A rear
connector plate has two DTE connectors, a 25-pin
EIA-232 connector and a 25-pin CCITT V.35 connector.
It allows removal of a modular circuit card without
disconnecting the DTE cables at the rear of the carrier.
Also, there are connector modules which have six ports
and are supplied with the modular DSU-TDM or
DSU-MCMP circuit cards. These connector plates and
modules function as interfaces between the modular
circuit cards and the DTEs.
This manual describes the procedure for installing a
COMSPHERE 3000 Series Carrier into a COMSPHERE
72-inch cabinet. A COMSPHERE 72-inch cabinet with
available equipment-mounting dimensions of 63 inches
high by 19 inches wide has the capacity to hold up to six
carriers, allowing for a high-density installation
combination of up to 96 DSUs and/or dial/lease modems.
COMSPHERE 3000 Series Carriers can also be mounted
in other types of EIA standard 19- or 23-inch wide
cabinets. (The heights of the other types of cabinets may
vary.)
Technical Specifications
Table 1-1 lists the Technical specifications for the
COMSPHERE 3000 Series Carrier.
Table 1-1
(1 of 6)
Technical Specifications for the COMSPHERE 3000 Series Carrier
Technical Specifications
Criteria
ENVIRONMENT
Operating Temperature
Relative Humidity
Storage Temperature
Shock and Vibration
32 F (0 C) to 122 F (50 C)
5% to 95% (noncondensing)
–4 F (–20 C) to 158 F (70 C)
Withstands normal shipping and handling
POWER REQUIREMENTS
Carrier with ac power supply
(maximum capacity)
100 Vac (approved for use with
Models 3811 and 3911)
115 Vac (approved for use with
Models 3151, 3161, 3511, 3551, 3611,
3616, 3811, and 3911)
230 Vac (approved for use with
Models 3811 and 3911)
Fan Module
100 Vac
115 Vac
230 Vac
Shared Diagnostic Control Panel (SDCP)
100 Vac
115 Vac
230 Vac
85 100 Vac, 47-63 Hz (3.0 amp, 175 watts at 100 Vac)
90 132 Vac, 60 Hz ±3 (3.0 amp, 216 watts at 115 Vac)
220—240 Vac nominal, 47 to 63 Hz (1.5 amp, 175 watts
at 230 Vac)
Supplied by carrier, 45 watts at 100 Vac
Supplied by carrier, 45 watts at 115 Vac
Supplied by carrier, 57 watts at 230 Vac
Supplied by carrier, 1 watt at 100 Vac
Supplied by carrier, 1 watt at 115 Vac
Supplied by carrier, 1 watt at 230 Vac