Radio Shack CT-400 owner manual SID Screening

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SID SCREENING

If two different cellular market areas are located close to one another, a call designated for the A (or

B)carrier in one market can sometimes be placed using the A (or B) carrier located in the other mar- ket area. This can result in unwanted roaming and higher charges.

At the time of activation, a code is programmed into your phone that uniquely identifies your cellular carrier. To prevent unwanted roaming, your phone’s System IDentity (SID) screening feature lets you set your phone to look for your designated carrier’s code signal each time you place a call, so the calls you place use only your carrier.

Notes:

If SID screening is set to ON and the phone cannot locate your designated carrier’s code signal, only emergency calls to the emergency number programmed into your phone can go through. Other calls will not go through, and the phone will not roam. NO SVC appears (with NO flashing).

When SID screening is set to OFF, your phone automatically roams according to the selected cellular system type (see “Setting the Cellular System Type” on Page 26).

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Contents CT-400 Features Fm Page 3 Wednesday, July 21, 1999 957 AM Contents Troubleshooting Care and Maintenance Specifications Memory FeaturesAccessories Safety Information ABC Look AT the DisplayRoam Preparation Installing the BatteryImportant Battery Tips Fm Page 9 Wednesday, July 21, 1999 957 AM Charging the Battery When to Recharge the Battery Discharging Batteries Turning the Phone ON/OFF Basic OperationMaking a Call To clear all digitsSignal Strength Except Receiving a CallMaking Emergency Calls Adjusting the VolumeTo quickly dial the emergency number, hold down Last 10 Number Redial You See Shortcut/Description Menu OverviewCall Restriction Description Level Security FeaturesSelecting a Call Restriction Level Fm Page 22 Wednesday, July 21, 1999 957 AM Emerg OFF if it is OFF Turning ONE-TOUCH Emergency Dialing ON/OFFTurning Keyguard ON/OFF When keyguard is onSelecting the Active Phone Number Cellular SystemsSetting the Cellular System Type Fm Page 27 Wednesday, July 21, 1999 957 AM Roaming SID Screening Fm Page 30 Wednesday, July 21, 1999 957 AM Message Waiting Special Phone ServicesCalling Line ID Other Services Call Timers Special FeaturesBacklight Control Keypad Tones When you select the setting Lights onRing Volume Changing the Lock Code Ring TypeFm Page 38 Wednesday, July 21, 1999 957 AM Using the Call Register Clearing the Call Lists Storing/Clearing a Calling Card Number Using Calling Card DialingCard Type Carrier Carrier Access You See Name Number Access NUMWait for Prompt Using a Stored Calling Card NumberUsing TOUCH-TONE Services Adding a Wait Adding a PauseThis spells # PIN Call # PIN Code DialingEnter Fm Page 47 Wednesday, July 21, 1999 957 AM Storing a Number and Name in Memory Memory FeaturesTo return to the previous Hold downTo store the number in the one-touch location Hints Using Memory Location 1 You can hold ONE-TOUCH/SPEED Dialing Using Number Quick StoreClearing a Memory Memory ScrollingIf you stored only a number in the memory lo Using Scratchpad Memory Accessories Operating Environment Safety InformationTraffic Safety Fm Page 57 Wednesday, July 21, 1999 957 AM FCC Regulations Emergency CallsIf the power comes on, but the phone does not work TroubleshootingIf the power does not come on or stay on Care and Maintenance Specifications Fm Page 62 Wednesday, July 21, 1999 957 AM Fm Page 63 Wednesday, July 21, 1999 957 AM Division of Tandy Corporation RadioShack