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PacketStar
®
PSAX 4500 Multiservice Media Gateway User Guide
, Issue 2
Release 8.0.0
Chapter 2 Hardware Description
Hardware Specifications
Stratum 3–4 Module Specifications
The specifications for the PSAX 4500 Stratum 3–4 module are given in
Table 2-6.
CPU2 Module Specifications
The specifications for the CPU2 module are given in Table 2-7.
Units per system
Two required for redundancy
Connector
Two screw-type terminals on the rear panel
Wire/cable size
(PSAX 4500)
Power feed:
#12 AWG wire recommended, up to #10
AWG wire maximum (requires insulated cable clamps be
replaced with clamps provided in the installation kit (PN
06-CC8122, 4 each).
Frame ground:
up to #8 AWG stranded.
Note:
Wire size is based on site requirements.
Table 2-5. -48 V dc Power Supply Module Specifications (Continued)
Specification
Description
Table 2-6. Stratum 3–4 Module Specifications
Specification
Description
Slot configuration
Front two middle slots labeled
A
and
B
Dimensions
15.8 cm H x 1.6 cm W x 24.1 cm D
(6.2 in. H x 0.6 in. W x 9.5 in. D)
Weight
0.22 kg (0.5 lb)
Units per system
2 required for redundancy
Power consumption
12 W per pair
Synchronization source
Internal or external
Operational states
Freerun (internal Stratum 3 oscillator), synchronized to
external timing source, and holdover (maintains clock when
timing source is removed)
Accuracy
Stratum 3 or 4, selectable
External clock input
ANSI/ITU-T Composite (64 kHz), T1BITS (1.544 MHz), and
E1ETSI (2.048 MHz).
Connector
One RJ-45 (with either 120 ohm or 75 ohm termination)