Zhone Technologies, Inc. | IMACS Product Book, Version 4 |
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X.25 PAD
Nx56/64
PBX/Key
System
Mainframe
IMACS |
Service Provider
Central Office
PSTN
DS1/E1 DACS
Backup Link
Frame Relay
Network
Router
Nx56/64 or T1/E1
Figure 33—Frame Relay and Internet Services Using IMACS’ FRAD Server
IDSL Service Provisioning
An IMACS with a Frame Relay server can be used for efficient ISDN DSL (IDSL) provisioning for Internet access at speeds up to 128K. Each IMACS BRI card provides up to eight IDSL ports over single twisted pair wire. There can be up to seven such BRI cards in an IMACS800/900. This arrangement
Each Frame Relay server supports up to 35 NTUs at 128K over 1 T1 (with 3:1 concentration) or 1 E1 (with 2.5:1 concentration), thereby taking advantage of frame relay’s statistical multiplexing capabilities. Up to 64 DS0s are channelized through the Frame Relay Server ports and are concentrated onto a single port connected to the network. Three concentrator ports bring in additional NXDS0s channels to be concentrated onto the single outgoing port as shown in Figure 34.
March 2001 | Page 84 |