AT&T 1231, 2231 user manual Case of difficulty, Technical specifications

Page 13

Appendix

In case of difficulty

If you have difficulty with your phone, please try the suggestions below. For Customer Service, visit our web site at www.telephones.att.com, or call 1-800-222–3111.

Appendix

Technical specifications

Telephone does not work at all

Make sure batteries are installed and charged correctly (see page 7).

Make sure the AC adapter is plugged into an outlet not controlled by a wall switch.

Make sure the telephone line cord is plugged firmly into the base unit and the modular jack.

If you have dial-pulse telephone service, make sure the dial mode is set to Pulse (see page 14).

If these suggestions do not work, unplug the base, remove and re- insert the batteries, then place the handset in the base to re-initialize.

RF Frequency Band

2400 MHz — 2483 MHz

(Handset to Base)

 

 

 

RF Frequency Band

2400 MHz — 2483 MHz

(Base to Handset)

 

 

 

Channels

95

 

 

Channel Spacing

864 KHz

 

 

Output Power

20 dBm

Phone does not ring

Make sure the ringer is on (see page 13).

Make sure the telephone line cord and AC adapter are plugged in properly (see page 6).

Move the handset closer to the base.

You might have too many extension phones on your telephone line to allow all of them to ring. Try unplugging some of them.

Sensitivity

-96 dBm

 

 

Modulation

GFSK

 

 

Operating Temperature

32°F — 122°F

 

0°C — 50°C

 

 

Base Unit Voltage

96 — 130 Vrms

(AC Voltage, 60Hz)

 

If you hear noise or interference during a call

You may be out of range. Move closer to the base.

Appliances plugged into the same circuit as the base can cause interference. Try moving the appliance or base to another outlet.

The layout of your home or office might be limiting the operating range. Try moving the base to another location, preferably on an upper floor.

If the buttons don’t work, try placing the handset in the base for at least 15 seconds.

Disconnect the base from the modular jack and plug in a corded tele- phone. If calls are still not clear, the problem is probably in your wiring or local service. Call your local telephone service company.

Base Unit Voltage

7 — 13 Vdc @400 mA

(AC Adapter Output)

 

 

 

Handset Voltage

3.2 — 4.7 Vdc @600 mAh

 

 

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Contents GHz Cordless Telephone 2231/1231 Table of contents Handset Quick reference guideBefore you begin Parts checklistAbout Caller Identification Telephone operating rangeBattery installation & charging Telephone base & charger installationBelt clip & optional headset Wall mountingOptions while on calls Intercom and call transfers Handset settingsLanguage Handset nameClear msg. wait Dial TypePhonebook search New phonebook entriesTo dial, change or delete entries To review your call log Screen icons, indicator lights & tonesCase of difficulty Technical specificationsIndex