Nortel Networks Video Gaming Accessories 553-3001-211 Manual De Usuario

 NT8D14 Universal Trunk card

Power to the NT8D14 Universal Trunk card is provided by the module power 
supply (ac or dc).

Ring detection

17 to 33 Hz
40 to 120 V rms

N/A

N/A

N/A

Line leakage

Š 30k ohms, 
tip-to-ring, 
tip-to-ground, 
ring-to-ground

Š 30k ohms, 

tip-to-ring, 

tip-to-ground, 

ring-to-ground

N/A

N/A

AC induction 
rejection

10 V rms, tip-to-ring, 
tip-to-ground, 
ring-to-ground

10 V rms, tip-to-ring, 

tip-to-ground, 

ring-to-ground

N/A

N/A

Selected in software.

Selected by jumper strap settings on card. Refer to Tables 185, 186, and 187 for details.

For loop extender application, the maximum voltage applied between tip and ring is –105 V ±5%. The 
minimum dc loop resistance for this type of application is 1800 ohms.

+15.0 V dc

+5%

306 mA

–15.0 V dc

+5%

306 mA

+5.0 V dc

+5%

750 mA

+8.5 V dc

+2%

450 mA

–48.0 V dc

+5%

415 mA