
Appendix D PSAX Module Features
DS3, E3, and STS-1e Interface Modules
D-16
255-700-447
PacketStar
®
PSAX 2300 Multiservice Media Gateway User Guide
, Issue 1
Release 9.0.0
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Frame relay UNI and NNI (FRF.1, FRF.2, FRF.5, and FRF.8)
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ITU-T I.370 (frame relay policing)
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Congestion management
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Traffic policing
Hardware Features
The 1-Port Channelized STS-1e, T1 Format module has the following hard-
ware features:
•
Number of ports: one port supports 28 virtual DS1 ports
•
Connector type: two BNC connectors, one to receive data and one to trans-
mit data
•
Line rate: 51.84 Mbps
•
Line encoding mode: B3ZS
•
Framing mode for CES: ESF and D4
•
Loopback capability: local loop, line loop
•
Transmit clock: local timing, loop timing
•
Line buildout: short (0–133 feet), long (134–266)
2-Port DS3 ATM Module (20N02)
The 2-Port DS3 ATM provides a network interface at Digital Signal Level 3
(DS3), with a line rate of 44.736 Mbps. Typically, this module is used to con-
nect the PSAX system to an ATM edge switch or digital subscriber line aggre-
gation multiplexer (DSLAM) device. Each port can be configured for ATM
service, including ATM UNI 3.0, 3.1, and 4.0; ATM IISP user and network;
and ATM PNNI 1.0 interfaces. The 2-Port DS3 ATM module has three types
of LED indicators.
Software Features
The 2-Port DS3 ATM module uses ATM Forum specifications UNI 3.0 or
UNI 3.1, which allows either DS3 port to act as a user network interface
(UNI), an interim inter-switch protocol (IISP) user or IISP network interface,
or as a PNNI network interface to an ATM network.
Hardware Features
The 2-Port DS3 ATM module has the following hardware features:
•
Number of ports: two
•
Connector type: four BNC connectors for the two ports (each port has one
receive connector and one transmit connector)
•
Line rate: 44.736 Mbps (typical)
•
Line encoding mode: B3ZS
•
Line type: C-bit parity, clear channel
•
Loopback capabilities: local loop, line loop, payload loop
•
Cell mapping: PLCP, direct mapping
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