Ctp150 Multiservice Interface Module; Figure 4: Ctp150 Serial Multiservice Interface Module - Juniper CTP150 Manual

CTP150 Platform Hardware Documentation
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CTP150 Multiservice Interface Module

8
NOTE: The external clock reference port must be the one in module slot 0,
the left-most slot in the front of the CTP150 chassis.
CTP150 Multiservice Interface Module on page 8
CTP150 T1/E1 Interface Module on page 9
The Juniper Networks CTP150 Circuit to Packet platform optionally includes a Serial
Multiservice Interface module CTP150-IM-SER-MS. The module provides 4-KHz or high
quality analog audio, or interrange instrumentation group (IRIG) signals.
The multiservice card enables an IRIG time code (IRIG-B) signal to be transported through
an IP network. The IRIG-B standard consists of a family of rate-scaled serial time codes
with formats containing up to three coded expressions or words. The IRIG-B pulse code
contains one frame of 100 elements per second for the time of the year and GPS receiver
status. IRIG-B encodes day of year, hour, minute, and second data on a 1-KHz carrier
frequency, with an update rate of once per second.
NOTE: Only ports 0 and 2 (the bottom two ports) on the front of the serial
module can be used for the multiservice features. You can configure direction,
output high and low levels, and data range for this module.
The four-port serial interface module supports individual cabling for each port. The
CTP150 ports have small serial ports for HD-26 26-pin connectors (see
Figure 4 on page 8). The lowest-numbered port (marked 0) is at the bottom left, and
the highest-numbered port (marked 3) is at the top right.

Figure 4: CTP150 Serial Multiservice Interface Module

1 3
CLK
0 2
HD-26 26-pin Clock
connectors connector
The software-selectable interfaces for the module on all ports are RS-232/V.24,
EIA530/X.21, EIA530A, V.35, and IRIG. Software-selectable rates range from 50 bps to
12.228 Mbps. On ports 0 and 2 there are also options for 4Khz (4WTO) analog, or high
quality analog.
The module also includes an external clock reference port for an HD-26 connector. Note
that only one external clock reference is required even if there are two interface modules,
serial or T1/E1.
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