Appendix E PSAX Modules
4-Port Ethernet Module
E-20
255-700-239
PacketStar
®
PSAX 4500 Multiservice Media Gateway User Guide
, Issue 2
Release 8.0.0
port to ATM virtual channels with individual virtual path identifiers (VPIs)
and virtual channel identifiers (VCIs), using structured (channelized) circuit
emulation. Signaling bit transport from time slot 16 is also provided, based
on ATM Forum standards for channel-associated signaling (CAS). With the
64 Kbps “clear channel” capability, this module can connect to a device using
an integrated services digital network with a primary rate interface
(ISDN PRI) service. Because this structured circuit emulation service can be
configured to use only a fraction of the time slots, the user can configure sev-
eral independent emulated circuits to share one service interface. The 6-Port
Enhanced E1 Multiservice module uses ATM Forum Specification UNI 3.0 or
UNI 3.1, which allows the E1 port to act as a user-network interface (UNI), an
interim interswitch protocol (IISP) user or IISP network interface to an ATM
network.
Software Features
Multiservices:
•
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 Enhanced E1 module has the following features:
•
Number of ports: six
•
Connector type: RJ-45 (120-Ohm symmetrical pair [4-wire] interface)
•
Line rate: 2.048 Mbps
•
Line encoding mode: HDB3
•
Loopback capabilities: local loop, line loop
•
Framing mode: cyclic redundancy check-multifrequency (CRC-mf) (also
known as CRC-4)
4-Port Ethernet Module
The 4-Port Ethernet module has four physical ports and a fifth, virtual port.
Each physical port has the ability to autosense to operate at either 10Base-T
or 100Base-T, and autonegotiate to automatically detect and switch to half-
or full-duplex port speeds. Each of the physical ports can be configured inde-
pendently to operate within shared or separate bridge groups.