255-700-239
E-25
PacketStar
®
PSAX 4500 Multiservice Media Gateway User Guide
, Issue 2
Release 8.0.0
Appendix E PSAX Modules
21-Port High-Density E1 IMA Module
•
User to Network Interface Version 3.0
•
User to Network Interface Version 3.1
•
Private Network-Network Interface (PNNI), Version 1.0
, af-pnni-0055.000
•
Integrated Local Management Interface Specification Version 4.0,
af-ilmi-0065.000
Multi-Services:
•
ATM: ATM UNI 3.0 and 3.1; Interim inter-switch signaling protocol (IISP)
user, IISP network
•
CE: Circuit emulation service (CES) with ISDN PRI using 64 Kbps clear
channel; dynamic bandwidth circuit emulation service (DBCES—propri-
etary version); 1 x 64 Kbps structured CAS; unstructured CES
•
HDLC Passthrough
•
Frame relay UNI and NNI (FRF.1, FRF.2, FRF.5, and FRF.8)
•
ITU-T I.370 (Frame relay policing)
•
Congestion management
•
Traffic policing
Hardware Features
The High-Density E1 module provides the following hardware features:
•
Number of ports: 21
•
Connector type: two Mini-Champ connectors that mate with the AMP
cable #1324936-1
•
Line rate: 2.048 Mbps
•
Physical interfaces supported: ITU-T G.703, ITU G.704
•
Line encoding mode: HDB3
•
Loopback capabilities: line loopback, local loopback
•
Line buildout: N/A
•
Framing mode: cyclic redundancy check multi-frequency (CRC-mf)
21-Port High-Density E1 IMA Module
The 21-Port High-Density E1 IMA module provides a line rate of 2.048 Mbps
per port. The module’s inverse multiplexing for ATM capabilities permit a
user to strap 2 to 21 of the physical ports together to create ATM interfaces
that support up to 43 Mbps of bandwidth. A maximum of 10 IMA groups
may be configured per module.
This module offers native E1 ATM services and E1 IMA services, including
permanent virtual circuits, soft permanent virtual circuits, and switched vir-
tual circuits. The module supports UNI v3.a, UNI v4.0, IISP, PNNI, and ILMI.
This functionality enables service providers to offer both individual unchan-
nelized E1 ATM services (without IMA overhead) and multiple E1 IMA
group services using a single module.
