RAD Data comm E1/T1 Main Link and Sublink Characteristics, FCD-IPM Functional Block Diagram

Chapter 1 Introduction FCD-IPMInstallation and Operation Manual

ISDN or

Serial

Port

Main		Voice	n x 64 kbps
Link	Sublink	Port

Mux

Router

Switch

LAN 1

LAN 2

Figure 1-4. FCD-IPM Functional Block Diagram

FCD-IPM can be ordered in several configuration options. The main link is always E1/T1 (E1 over SHDSL), and there is always at least one LAN link. The other interfaces may be a sub E1/T1 link, analog voice, ISDN backup, n x 64 data port, or router port.

Main Link and Sublink Characteristics

The FCD-IPM E1 main and sublink meet the requirements of ITU-T Rec. G.703, G.704, G.706, G.732, and G.823, and support 256N and 256S multiframes

(2 or 16 frames per multiframe, respectively), in accordance with ITU-T Rec. G.704. For FCD-IPM T1 versions the main and sublink comply to AT&T TR62411 and ANSI T1.403 standards, and support D4 and ESF framing.

The framed mode and use of the CRC-4 function are user-selectable.

1-6 Functional Description