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Appendix D PSAX Module Features
Fiber-Optic Interface Modules
D-34
255-700-447
PacketStar
®
PSAX 2300 Multiservice Media Gateway User Guide
, Issue 1
Release 9.0.0
•
Multimode (MM) module (20N12/20N14) is intended for short-reach
applications, for example, interoffice or intraoffice sections of a local area
network (LAN).
Software Features
These modules are available in two variations, which differ according to the
firmware installed in the module.
•
The 1-Port OC-3c MM AQ and OC-3c SM AQ modules use the AQueMan
algorithm for flow control.
•
The 1-Port OC-3c MM TS and OC-3c SM TS modules use traffic shaping
(TS) for flow control. See the appropriate PSAX system user guide for more
information on traffic shaping.
Hardware Features
The 1-Port OC-3c modules with AQueman or Traffic Shaping have the opti-
cal specifications shown in Table D-6.
Table D-6. 1-Port OC-3c Module with AQueman or Traffic Shaping Optical Specifications
Feature
Module
OC-3c (SM AQ) or
OC-3c (SM TS)
OC-3c (MM AQ) or
OC-3c (SM TS)
Number of ports
1
1
Type of connector (two for each mod-
ule, transmit and receive)
SC
(snap-on
connector)
SC
(snap-on
connector)
Type of fiber optic cable
single-mode
multimode
Fiber optic cable reach (approximate,
depending on fiber makeup)
15 km
(9.3 miles)
2 km
(6,560 feet or 1.2
miles)
Line rate
155 Mbps (SONET)
155 Mbps (SONET)
Optical wavelength (nominal value)
1,310 nm
1,310 nm
Optical input sensitivity
-31 to -8 dBm
-32.5 to -14 dBm
Optical output power
-15 to -8 dBm
-20 to -14 dBm
System gain
15 dB
13.5 dB
Transmitter minimum optical output
power (average)
-15 dBm
-20 dBm
Transmitter maximum optical output
power (average)
-8 dBm
-14 dBm
Receiver minimum optical input power
(average)
-31 dBm
-32.5 dBm
Receiver maximum optical input power
(average)
-8 dBm
-14 dBm
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