Nortel Networks Passport ARN Routers manual Token Ring UTP Interface, Serial Interfaces

ARN Technical Specifications

Token Ring UTP Interface

The token ring UTP interface provides unshielded twisted-pair support. The ARN token ring expansion module and token ring/tri-serial expansion modules contain this receptacle.

Table C-6 shows the RJ-45 pin assignments for the UTP interface and identifies the pin locations.

Table C-6. Token Ring UTP Interface Pin Assignments

Pin Assignment	Pin No.	Signal (Function)
	1	Not used
1 2 3 4 5 6 7 8	2	Not used
	3	TX+ (Transmit to UTP wire)
	4	RX+ (Receive from UTP wire)
	5	RX- (Receive from UTP wire)
	6	TX- (Transmit to UTP wire)
	7	Not used
	8	Not used

Serial Interfaces

The ARN supports up to five serial interfaces. You can connect up to three, 44-pin (DB-44) serial cables to an ARN that contains an optional Ethernet/tri-serial, token ring/tri-serial, or tri-serial expansion module. You can connect one, 44-pin serial cable to each serial adapter module (the ARN can support two).

The serial interfaces provide multiprotocol WAN connection, each operating independently with RS-232, RS-422, RS-530, V.35, V.28, and X.21 electrical interfaces at transmission rates from 1200 b/s to 2.048 Mb/s. When used with standard keyed cables, the ports automatically configure to the desired electrical interface.

You can use the following cables, described in the Cable Guide:

•V.35 connections (Order No. 7220)

•V.28 connections (Order No. 7837)

•X.21 connection (Order No. 7224)

114200-E Rev 00 C-9