Справочник Пользователя для 3com SuperStack II

HAPTER

3: I

NSTALLING

THE

ARDWARE

The ISDN U port uses an RJ-45 connector. In the U.S. and Canada, you do
not need a separate NT1 between the bridge/router and the ISDN outlet
because the NT1 is built into the model 44x bridge/router.

For more information on ISDN cables, see “ISDN S/T Cable” on page 170.

Model 45x and 54x 56/64K CSU/DSU

Models 45x and 55x bridge/routers have a 56/64K CSU/DSU connector.

The 56/64K CSU/DSU port uses an RJ-48S connector.

For more information on CSU/DSU cables, see “56/64K CSU/DSU Cable”
on page 173.

Model 46x and 56x T1/FT1

Models 46x and 56x bridge/routers have a T1/FT1 RJ-48 connector.

The T1/FT1 Telco port uses an RJ-48 connector.

56/64 Kbps

CSU/DSU cable

Link

Line
Act

Line
Error

Connect

Fault

(CSU/DSU)

B1 B2

WAN

DDS

wall outlet

RJ-48 T1 cable