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Frame Relay Service Modules (FRSMs)
Figure 4-7
Using FRASM for a FRAS BNN Connection
SDLC
Remote Bisynch
End User Device
Using FRAS BNN, the FRASM supports
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The 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:
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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 Figure 4-8.)
Cisco MGX 8220 Installation and Configuration
4-14
ATM network
MGX
FRASM
8220
Frame Relay
over ATM
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.
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
Frame
Front-end
Relay
MGX
Processor
FRSM
8220
NCP 7.1
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Chapter
Mainframe
VTAM1
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Troubleshooting
