Pre-programmed Dtmf Signalling, To send the code

3.To send the code, press M (MODE), followed by Send.

The sequence of characters is converted to DTMF signals and sent automatically, one character at a time. The characters disappear from the display, when the transmission starts.

Pre-programmed DTMF Signalling

You can store a code in memory in the same way as you store a phone number.

The code can be any combination of the digits 0 -- 9 and the characters and #, and it may contain up to 20 characters.*

To send the code:

1.Call the desired phone number and wait until the call has been connected.

2.Recall the code from memory. The characters appear in the display.

3.To send the code, press M, followed by Send. The sequence of characters is converted to DTMF signals and sent automatically, one character at a time. It is irrelevant whether the ‘‘DTMF’’ option is selected or not.

If the ‘‘DTMF’’ option is enabled, you must use the RCL key to recall the code. Do not use the # key.

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Ericsson GH198 user manual Pre-programmed Dtmf Signalling, To send the code

GH198 specifications

The Ericsson GH198 is a notable mobile phone that emerged in the late 1990s, encapsulating the early era of cellular technology. This device, popular in its time, encompassed several features and characteristics that appealed to users seeking reliable communication solutions.

One of the main features of the Ericsson GH198 was its compact design, which allowed for easy handling and portability. Weighing in at a mere 300 grams, it was lightweight compared to many of its contemporaries. The device boasted a monochrome LCD display, which, while simpler than today's standards, offered clear and readable text for phone numbers and messages. The display was complemented by a user-friendly interface, allowing for seamless navigation through features.

The GH198 operated on the GSM (Global System for Mobile Communications) standard, a significant technology in mobile telephony that laid the groundwork for modern mobile networks. GSM technology enabled the GH198 to provide enhanced voice quality, reliability, and better coverage than previous analog systems. The phone supported various frequency bands, enhancing its usability across diverse regions.

One of the standout characteristics of the Ericsson GH198 was its extended battery life. The device utilized a NiMH battery, which provided talk time of up to 12 hours and standby time of up to several days. Users appreciated this longevity, as it reduced the frequency of charging interruptions, allowing for prolonged connectivity on the go.

In terms of functionality, the GH198 offered essential features such as SMS (Short Message Service) capabilities, enabling users to send and receive text messages—a feature that was gaining popularity during its release. Additionally, the phone included a phonebook memory capacity for storing hundreds of contacts, making it convenient for users to maintain their personal and professional connections.

The Ericsson GH198 also supported functionalities such as call waiting and caller ID, enhancing the overall user experience. Its simple yet effective design made it ideal for both business professionals and everyday users looking for straightforward communication tools.

In summary, the Ericsson GH198 embodied the pinnacle of mobile technology in its era. With its compact design, reliable GSM connection, impressive battery life, and essential communication features, it played a significant role in the evolution of mobile phones, paving the way for future innovations in the telecommunications industry.

Contents

Ericsson Innovatron Patents Ericsson Mobile Communications AB 1208/4/P/502763 Safety and Precautions Contents Special Functions About this manual Introduction Recharg Overview Key functions PIN -- Personal Identification Number SIM -- Subscriber Identity ModuleElectronic lock Observe the following Making the Phone Ready for Use PIN check enabledTurning the Phone On SIM not inserted Message ‘‘NO NETW’’ No Net- work is displayed Serv indicator flashes Entering a Phone Number Making a CallIf a number contains more than 10 digits Ending the call If a call is unsuccesfulSee also the chapter Dialling Memory and Scratch Pad Call Time Meter Receiving a Call Microphone Mute Volume ControlScratch Pad Key Lock Display Status IndicatorsAlphanumeric Field Numeric Field Call Alphabetic ModeFunction Use Recall Store Clear MODE/MUTE Keypad Volume control PowerAlphabetic mode letter mode End Chapter Basic Operation Mute -- Privacy keyNumeric keys Ringing Signal Audible SignalsIllumination Star and Hash Alarm Signal Visual SignalsError Signal Confirmation Click Storing a Number and Name Storing Numbers Memory Full Memory Protection Erasing a Stored Number and Name Recalling a Number Using Numeric Mode Numeric and Alphabetic ModeScrolling through the Memory Alternative Method for Recalling a Number Speed Calling Recalling a Number Using Alphabetic Mode Replacing the Last Digits of a Recalled Number Appending Digits to a Recalled Number Scratch Pad Dialling MemoryRecalling the Last Six Numbers Called Storing a Number Recalling a Number Sending a Code Sending Dtmf Signals To send the code Pre-programmed Dtmf Signalling ‘‘RETRY OFF’’ Text in the display Special Function Using Method Accessing a Special Function Storing a New Setting Changing a SettingUsing a Combination of the Two Methods Leaving a Special Function Key Clicks, Silent Keypad or Dtmf Signals Ringing Signal VolumeCall Forwarding ### ‘‘IF BUSY’’ ‘‘NO REPLY’’ ‘‘UNREACHABL’’ Cancelling ALL call forwarding services Call Barring ‘‘CHG PASSW’’ ‘‘CANCEL ALL’’‘‘ACTIVATE’’ appears ‘‘BARRING ON’’ or Changing your password ‘‘CHANGE PASSWORD’’ -- -- -- ‘‘CHG PASSW’’ is displayedAutomatic Re-try Current Network Back LightAvailable Networks ‘‘LIGHT AUTO’’ or ‘‘LIGHT OFF’’ or ‘‘LIGHT ON’’ Automatic Network Selection Network Selection Mode List of ‘‘Preferred’’ Networks Reviewing the list of networksDeleting a network Last Call Time Total Call TimeMinute Minder PIN Unblocking ProcedureDigitSIM Unblocking Key Enabling/Disabling the PIN Check Language Selection Any KeyArea Code ‘‘ANYKEY OFF’’ or ‘‘ANYKEY ON’’, is displayed Battery Voltage Battery DischargeEntering and storing the area code Turning the Area Code facility on or OFF Full lock Phone LockAuto lock Changing your security code Disabling the lock or changing the lock level Enabling the electronic lock Batteries Standard battery Slimline battery High-capacity Battery Low battery alarm during a call Care and Maintenance Removal Insertion Inserting and Removing a Standard or Slimline Battery Inserting and Removing a High-Capacity Battery Recharging Slide indicator Basic Charger Connecting the basic charger Recharging a standard battery Hands-Free Vehicle Kit Portable Hands Free Vehicle Power Adaptor and Rapid Charger Recharging a battery and powering the phone Multi Charger Connecting the multi charger Recharging a battery using the vertical compartment Recharging a battery using the horizontal compartment Observe the following Received Signal Is Weak Serv Indicator FlashesFlashing Red Indicator Light -- Alarm Signal Sounds Phone Does Not Come On Steady Red Indicator Light Changing Your PasswordMessages Password changing was successful ‘‘UPDATE ERROR’’ ‘‘SIM UPDATE’’ or‘‘SIM SECUR’’ or Inserting the SIM