Справочник Пользователя для AT&T System 85

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It is recommended that the 8110 and 8110M telephones have auxiliary power (9V DC, 100 mA)

to improve the performance of the speakerphone under the following conditions:

Use with the TN746 circuit pack requires auxiliary power (in the form of a power

adapter) at all loop lengths.  On System 85 and DEFINITY G2, the line must be

administered as Data Restricted to allow for the automatic disconnect feature.

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If you are using:

Circuit Pack TN742

Circuit Pack TN769

d

When loop length exceeds:

16,000 feet (22 gauge)

10,000 feet (24 gauge)

6,300 feet (26 gauge)

or

d

When loop resistance exceeds 256 ohms

or

d

When loop current is less than 26 mA

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If you are using:

Circuit Pack SN229

d

When loop length exceeds:

11,000 feet (22 gauge)

7,000 feet (24 gauge)

4,400 feet (26 gauge)

or

d

When loop resistance exceeds 180 ohms

or

d

When loop current is less than 26 mA

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Any installation

When loop current is less than 26 mA

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Any installation

When another analog telephone is bridged

with the 8110 or 8110M telephone

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