ASAI-Ethernet

Cable Connectivity for MFB

The system assembly is provided with two special amphenol connectors, or cables, that are plugged into the back of the ECS at the locations occupied by the TN2170 and TN2208 (see Figure 13-2). One cable has a female RJ45 receptacle that is used as the 10Base-T Ethernet connection. This cable is attached to the TN2170. The other cable consists of DB25 serial connectors and is attached to the TN2208. These cables provide Ethernet access and serial access to the DEFINITY LAN Gateway system assembly.

20 19 18 17 16

RJ45 10Base-T

View from Rear of Cabinet

AMP

RS232 C

RS232 B

RS232 A

Figure 13-2. Cable Connectivity to the System Assembly

The DEFINITY LAN Gateway cable is attached to a “demarcation point” within

25feet of the ECS, consisting of a WE-104 terminal block with 2 RJ45 connectors punched-down back-to-back so as to provide a “straight-through” connection. The terminal block, in turn, should be attached using suitable 10Base-T category 3 or better wiring to an Ethernet hub or an Ethernet hub adapter in the host to which physical connectivity is desired.

Issue 7 May 1998 13-3

Page 361
Image 361
Lucent Technologies 555-230-220 manual Cable Connectivity for MFB, Cable Connectivity to the System Assembly