Advanced Memory Dialing Features

Two-Part Tone Dialing

Your phone provides the standard Dual Tone Multi- Frequency (DTMF) signals typically used to access alternate long distance services, signal pagers, answering machines, etc. Generally, these services use a two-part procedure: First, a call is placed from memory or by using the keypad to a central telephone number. Then, you either receive a secondary dial tone, or are prompted to enter additional digits, such as a pager number, calling card number, etc.

To tone dial from the keypad, make the initial call, either from memory or by using the keypad. When prompted, enter additional tone digits using the keypad. The tones are automatically sent as you press the keys. Do not press SND .

To tone dial from memory, make the initial call, either from memory or by using the keypad. When prompted, recall from memory (using RCL , location number) the number you wish to send as DTMF digits. Press RCL , SND . Repeat these steps as required to send additional groups of numbers.

Memory Linking

The Memory Linking feature provides improved convenience when dialing constant number sequences, such as when accessing paging systems, retrieving voice mail, etc. It allows multiple number groups (e.g., main number, bank PIN code, and account number) to be stored in a single memory location, each group separated by a pause (o). Pauses are created by pressing FCN , SND . You may then place a call using this memory location, and sequentially transmit each number group (by pressing RCL , SND ) at the appropriate system prompt.

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Motorola MicroTAC owner manual Two-Part Tone Dialing, Memory Linking
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MicroTAC specifications

The Motorola MicroTAC, introduced in 1989, is an iconic mobile phone that set the stage for the evolution of modern cellular technology. Known for its innovative design, the MicroTAC was one of the first truly portable mobile phones, demonstrating how far telecommunications had come since the bulky models of earlier decades.

One of the standout features of the MicroTAC was its flip design, which allowed the phone to be compact when closed and easy to carry. When opened, the phone revealed a numeric keypad and a small monochrome display, which provided essential functions and caller ID information. This flip mechanism not only contributed to its portability but also protected the keypad and screen from damage when not in use.

The MicroTAC was notable for its lightweight plastic casing, which made it significantly lighter than its contemporaries. Weighing just under 250 grams, it was a remarkable feat of engineering at the time. The phone had a unique “antenna-in-handle” design, which contributed to its sleek appearance while also optimizing signal reception. This innovation was part of Motorola’s effort to make mobile communication accessible and convenient.

In terms of battery life, the MicroTAC featured a rechargeable NiCd battery that provided several hours of talk time. While modern smartphones boast days of battery life, the MicroTAC was considered admirable for its time, allowing users the freedom to communicate on the go without frequent recharges.

The Motorola MicroTAC operated on analog networks, specifically using the Advanced Mobile Phone System (AMPS). This technology allowed for a clearer voice transmission and was crucial in the early days of mobile communication, enabling users to connect in various environments where fixed lines were impractical.

Additionally, the MicroTAC boasted features like call waiting, auto redial, and a phone book capable of storing multiple contacts—a considerable leap forward from earlier mobile devices.

Despite its simplicity compared to modern smartphones, the Motorola MicroTAC laid the groundwork for future mobile technologies and design principles. Its combination of portability, innovative engineering, and user-friendly features solidified Motorola's reputation as a leader in telecommunications. The MicroTAC remains a nostalgic symbol of the early mobile telephony era and a testament to the foundational technologies that paved the way for today's devices.
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