3Com RELEASE 2 installation manual Network Do This Interface Has

The 2-line adapter has two jacks, each of which carries a single-pair line from the 2-line network interface jack. The 50-pin connector (attached to a 66-type block) carries up to 25 lines. You can connect your outside telephone lines from these (or other) network interface connectors to the control unit in many ways. The method you use to connect your outside telephone lines to the control unit depends on the type of network interface the local telephone company installs at the control unit location. The table on the next page tells you what to do next depending on the type of network interface you have.

If the
Network	And		Do This
Interface Has
A 1-line (RJ11-type)	Each jack is	Go on to the next procedure, "Test the
adapter for each	labeled with its	Outside Lines."
outside line	telephone
	number
	Each jack is not	1 Mark or label each jack with its
	labeled with its		telephone number from the list
	telephone		provided by the local telephone
	number		company.
		2 Go on to the next procedure, "Test
			the Outside Lines."
A 2-line (RJ14-type)	Each jack is	1 Plug a 2-line adapter into each
adapter for every two	labeled with the		jack.
outside lines	telephone	2 Go on to the next procedure, "Test
	numbers for its
			the Outside Lines."
	outside lines
	Each jack is not	1 Mark or label each jack with the
	labeled with the		telephone numbers for its outside
	telephone		lines from the list provided by the
	numbers for its		local telephone company.
	two outside lines	2 Plug a 2-line adapter into each
			jack.
		3 Go on to the next procedure, "Test
			the Outside Lines."
A 50-pin (RJ21-type)	The interface is	See the instructions for extending the
connector for the	labeled with the	network interface to the jack field in
outside lines	telephone	the "Jack Field Wiring Supplement" at
	numbers for the	the end of this manual.
	outside lines
	The interface is	1	Mark or label the interface with the
	not labeled with		numbers for your outside lines.
	telephone	2	See the instructions for extending
	numbers for the
			the network interface to the jack
	outside lines
			field in the "Jack Field Wiring
			Supplement" at the end of this
			manual.

4Step 1: installing the Control Unit