Siemens user manual 6210U/6220U Installation, Set the Termination Switch on the Telephone

6210U/6220U Installation _________________

U models include a built-in NT1. Optional external ISDN S/T Terminal Equipment may share the telephone's ISDN line by connecting to the S/T jack on the telephone.

If you are not using external Terminal Equipment, no termination switch setting is required.

Set the Termination Switch on the Telephone

If external Terminal Equipment (TE) is connected, set the termination switch on the bottom of the telephone to match the termination impedance to your premises wiring configuration. Two typical wiring configurations for connecting external TE are shown below, with the appropriate switch settings.

U IN	S/T OUT
	50
	100
	TERMINATION

Available switch settings are 50 and 100 ohms.

We recommend the use of Category 3 or better unshielded twisted pair cable with T568A or T568B connector wiring. Distances shown are the maximums for 24-gauge cable, and may vary for other cable types.

Basic Multipoint:

(recommended for most applications)

		6210U	50	300' max.
	U	or			TE
to Network
		6220U

Set phone termination to 50 ohms.

Set TE termination (internal or external) to OFF.

Tone Commander 6210/6220 User Manual 21