Token Ring Port Signals; Fddi Optical Bypass Switch Signals - Cisco 7000 Series Hardware Installation And Maintenance Manual

Token Ring Port Signals

A network interface cable provides the connection between the 9-pin Token Ring connectors on the
TRIP and a media access unit (MAU). The 9-pin connector at the TRIP end, and the MAU connector
at the network end, are described in "Token Ring Connection Equipment" in the chapter "Preparing
for Installation." Table A-6 lists the signals for the DB-9 Token Ring connector used on the TRIP.
Table A-6
Pin
1
5
6
9
10 and 11

FDDI Optical Bypass Switch Signals

Table A-5 lists the signal descriptions for the mini-DIN optical bypass switch available on the
multimode/multimode FIP (CX-FIP-MM) and single-mode/single-mode FIP (CX-FIP-SS). The
mini-DIN-to-DIN adapter cable (CAB-FMDD) allows connection to an optical bypass switch that
uses a DIN connector (which is larger than the mini-DIN on the FIP). For descriptions of FDDI
network configurations and equipment, refer to the section "FDDI Connection Equipment" in the
chapter "Preparing for Installation" and to the section "FDDI Connections" in the chapter "Installing
the Router."
Table A-7
Pin
1
2
3
4
5
6
Token Ring Connector Signals
Signal
Ring-In B
Ring-Out A
Ring-In A
Ring-Out B
Ground
Optical Bypass Switch Pinout
Description
+5V to secondary switch
+5V to primary switch
Ground to enable primary switch
Ground to enable secondary switch
Sense circuit—1 kohm to +5V
Ground—Sense circuit return
Token Ring Port Signals
Cabling Specifications A-5