TEW 4229 is a DNIC interface

Transformer approved by Mitel

for use with their MT8972 and

MT8971B/72B devices.

Applications:

•

Digital subscriber lines.

•

High speed data transmis-

sion over twisted wire.

•

Digital PABX line cards

and telephone sets.

MECHANICAL

Filtran Limited

229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3

4-7

ISDN

U-BUS/DNIC Input/Ouput Transformer

TEW 4229

DC Resistance

(6-1)

2.25

Ω

2.25

Ω

(2-4)

1.00

Ω

1.00

Ω

(3−5)

1.00

Ω

1.00

Ω

Inductance

(6-1)

>30 mH

>30 mH

Leakage Inductance

(6-1)

< 100 uH

< 100 uH

Turns Ratio

pri to sec

4 : 1 : 1

4 : 1 : 1

Dielectric Strength

(V rms)

2500

1500

Bandwidth

(approx)

3 dB, 10 - 500 KHz

All dimensions

are in inches

ELECTRICAL

TEW4229

TEW4229-1