Specifications

4-28 Cisco MGX 8220 Reference, Release 4.1
Frame Relay Access Service Module
Figure4-14 Using FRASM for a FRAS BNN connection
Using FRAS BNN, the FRASM supports:
• Point-to-point SDLC/frame relay lines.
• Multidropped devices over a single logical port. These can be assigned to different connections.
• Only one dlci to a single logical port.
• Only one connection to a single dlci.
• One PVC for each logical port.
• Two-way simultaneous device transmission.
• Two-way simultaneous mode between different devices.
The FRASM supports 8 T1 lines with each line supporting up to 24 DS0 ports for a total of
192 logical ports. The physical interfaces can be configured as follows:
• DS0-A 2.4 kbps with or without NRZI
• DS0-A 4.8 kbps with or without NRZI
• DS0-A 9.6 kbps with or without NRZI
• DS0 56 kbps with or without NRZI
• DS0 64 kbps without NRZI
The card data throughput is 1392 kbps. This can be used as 145 ports at 9.6 kbps ports or 24 ports at
56 kbps or any combination of configurable port speeds for a total up through and including
1392 kbps. (See Figure4-15.)