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Frame Service Module Features
Cisco MGX 8850 Installation and Configuration, Release 1.1.00, Part Number 78-6186-02
6-22
MGX-FRSM-HS2/B Features
The specific features are:
• Up to 1000 user-connections
• Maximum 2 logical ports
• Two HSSI lines with configurable line speeds in multiples of 56 Kbps or 64 Kbps
• Selectable DTE or DCE mode for each port
• In DCE mode, per port clock speeds of NxT1 and NxE1 up to 52 Mbps
• Various DTE/DCE loopback operations
• Maximum possible number of DLCIs per port by using the Q.922 two-octet header format.
• 1:1 redundancy through a Y-cable
MGX-FRSM-HS1/B Features
The specific features are:
• Up to 512 data connections
• In addition to data connections, support for:
— LMI according to ITU-T Q.333 Annex A and ANSI T1.617 Annex D
— OAM messaging
• Total card throughput of 16 Mbps
• Maximum of 8 Mbps per line
• Choice of DTE or DCE mode for each line
• A maximum frame size of 4510 bytes
• One-to-one mapping between a logical port and a physical line
• Support for metallic (internal) loopback (ITU-T type 1)
• Support for ANSI/EIA/TIA-613-1993 and ANSI/EIA/TIA-612-1993
Eight-Port FRSM Features
The specific features are:
• Up to 1000 user-connections.
• Fractional FRSMs support a single 56-Kbps or multiple 64-Kbps user-ports (FR-UNI, FR-NNI,
FUNI, and frame forwarding) per T1 or E1 line. Channelized FRSMs (AX-FRSM-8T1c and
AX-FRSM-8E1c) support multiple 56 Kbps or N x 64 Kbps user-ports per line up to the physical
line bandwidth limit.
• Bulk distribution for T1 only through the MGX-SRM-3T3. See the “Service Resource Module”
section in this chapter.
• Redundancy support: the MGX-SRM-3T3 can provide 1:N redundancy for T1 or E1 operation.
If the FRSM uses an SMB-8E1 back card, 1:1 redundancy is also available through Y-cabling.