3Com 3C10220 manual Solving NBX Telephone Problems

Solving NBX Telephone Problems 31

Table 7 Solving NBX Business Telephone Problems (continued)

Problem	Possible Cause	Suggested Action
	Faulty EPS	■	Follow the procedures
			described in Table 6 to
			determine if the EPS is faulty.
Telephone receives power,	Faulty connection	■	Check all connections
but date and time do not	to the NBX		between the telephone and
appear in the LCD display.	Network Control		the NBX chassis (patch cables,
	Processor (NCP) in		premises wiring, hubs, and
	the NBX chassis.		switches)
	The NBX NCP is not	■ Check other telephones. If
	operating properly.		they are working properly, the
			NCP is functioning properly.
Telephone receives power,	The telephone has	■ If the date and time appear in
date and time appear in	lost connection to		the LCD display, the telephone
the LCD display, but	the Network		previously had a connection to
telephone does not	Control Processor.		the NCP, but that connection
operate properly.			has been lost. Verify all
			physical connections between
			the telephone and the NCP
			(patch cables, premises wiring,
			hubs, and switches).
	The NBX NCP is not	■ Check other telephones. If
	operating properly.		they are working properly, the
			NCP is functioning properly.

If none of these procedures identifies the problem, contact an authorized 3Com service representative for additional assistance.