Zhone Technologies IMACS Network Device - Manual (Page 85)

Zhone Technologies, Inc. IMACS Product Book, Version 4
March 2001 Page 81
4. ACS-FRS Advanced Communication Server - Frame Relay Server
The 881160 FRS card concentrates multiple N x 56K or N x 64K frame relay data streams onto one or more
Nx56/64K links of the IMACS. In addition to frame relay concentration, the card encapsulates data for Nx56/64K
HDLC or SDLC data streams. RED frames can be discarded rather than forwarded to the FRS end-point screen.
The ACS-FRS uses flag sharing, meaning that the closing flag of one frame will be the opening flag of the following
frame.
The frame relay server software (v1.8) runs on the card, which provides up to 68 logical ports. Up to 128 permanent
virtual circuits (PVCs) can be configured on a single card. The aggregate speeds of all ports associated with each
FRS cannot exceed 8 Mbps.
The FRS has a maximum of 68 ports. When all four “C” ports are used to interface to other cards such as the HSU,
64 ports are left to interface to the external cross-connect.
The FRS card also maintains detailed performance statistics both on a per port and a per PVC level.
Frame Relay Server Specifications
There can be up to three Frame Relay server cards in an IMACS chassis in non-redundant operation. The Frame
Relay Server performance figure of 4000 Frames/Second was obtained using 64 byte frames. The following
hardware and firmware must be included in an IMACS to add Frame Relay Server operation:
•
880360- CPU Control Card with 8 T1/E1 Cross Connect (redundant-capable)
•
892360/892460 - 8 T1/E1 Interface card w/ 128K NVRAM
•
881160 - Advanced Communication Server (ACS) with 68 logical Frame Relay ports
•
60500 - Host Firmware version 5.0.0 or above
•
62180 - ACS Frame Relay Server firmware
Table 22—Frame Relay Server Specifications
Input/Output Ports
68 logical ports (maximum)
Input Traffic Ports T1, E1, fT1, fE1, V.35, RS422, EIA530, OCU-DP, FRAD
Output Traffic ports T1, E1, fT1, fE1, V.35, RS422, EIA530, OCU-DP, FRAD
Output Port types/Input UNI DCE, UNI DTE, NNI, Nx64K/56K FRAD
Maximum Frame Size 4K Bytes
Traffic Bandwidth 8 Mbps, Full Duplex
Performance 4,000 Frames per second (maximum)
Number of PVCs 128
System Capacity Maximum 3 per IMACS
Management RFC1315, DTE MIB, Frame Relay Service MIB, SNMP Alarm Traps per RFC 1215
Connectivity Craft Interface, SNMP or TELNET
LMI Options Q.933 Annex A, ANSI T1.617 Annex D, LMI (Gang of 4), None
Information Rates CIR = 0 to 2048 Kbps, Bc = 0 to 2048 Kb, Be = 0 to 2048 Kb
Congestion Handling FECN, BECN
Circuit Priorities 4 (Version 2.0 or above)