Teo 8610 ISDN Phone Installation - Manual (Page 12)

Tone Commander 8610/8620 Installation Instructions
Page 12 13-280116 Rev. C
8610U/8620U 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.
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)
Extended Point-to-Point:
Available switch settings are 50 and 100 ohms.