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Address Book

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The entries in your phone’s address book are managed separately from those in the SIM phone book. Data may be exchanged between the address book and the SIM phone book.

For details see Copy to SIM in the

address book menu (p. 27) or Copy into 9in the SIM phone book

menu (p. 29).

Up to 400 entries may be stored in your phone’s address book, depending on memory usage.

New entry

+Press to open address book (in standby mode).

9 Address book Q

- - - - - - - - - - - - - - - - - - -

<New entry>

<Business card>

E D Select

Select <New entry>.

§Select§ Select soft key.

Abc New entry Last name:

First name:

E D Save

J Enter entry’s name and phone number (p. 26).

Scroll through fields to enter additional information.

Last name:

Fax:

First name:

Street:

Company:

Postal/ZIP code:

E-mail:

City/State:

Phone:

Country:

Tel./office:

URL:/SMS:

Tel./mobile:

Group:

OK Select soft key to store and save entry.

URL:/SMS:

In TDMA mode, you may use this field to store the SMS address of someone using a different service provider.

Group

Important entries may be assigned to a special group (VIPs).

VIP entries are displayed at the top of the address book (p. 27).

You can set your phone’s ringer so that it only sounds for incoming calls from VIP numbers (p. 74).

Calls from VIPs may be announced by a special melody (p. 72).

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Siemens GSM 900, GSM 1900, TDMA 800, TDMA 1900 manual Address Book, New entry

GSM 900, GSM 1900, TDMA 1900, TDMA 800 specifications

Siemens is a renowned telecommunications equipment manufacturer known for its innovative solutions in mobile communication. Among its notable contributions are the TDMA 800, TDMA 1900, GSM 900, and GSM 1900 systems. These technologies have played a significant role in shaping mobile telephony, particularly during the late 20th century.

TDMA, or Time Division Multiple Access, is a digital transmission protocol that allows multiple users to share the same frequency channel by dividing the signal into time slots. The Siemens TDMA 800 operates in the 800 MHz frequency band, which is ideal for regional mobile communication. Its main features include improved call quality, greater capacity, and effective handover capabilities. This system was particularly popular in the United States, where it formed the backbone of early digital cellular networks.

On the other hand, the TDMA 1900 operates in the 1900 MHz band, catering to urban areas with higher population densities. This system further enhances voice clarity and offers faster data transmission speeds. Its key characteristics include support for features such as call waiting, caller ID, and enhanced voice privacy, making it suitable for modern telecommunication needs.

GSM, or Global System for Mobile Communications, is another critical technology developed by Siemens. The GSM 900 operates at 900 MHz and is one of the most widely adopted mobile standards globally. Its contributions to the communication landscape include superior frequency reuse, allowing for a greater number of simultaneous calls. The GSM 900 also supports various services beyond voice calls, including SMS (Short Message Service) and basic data transmission.

Meanwhile, GSM 1900, which functions in the 1900 MHz frequency band, is predominantly used in North America. This technology shares many features with GSM 900, but it accommodates a larger number of channels per frequency unit due to its higher frequency. The GSM 1900 system has been critical in facilitating the growth of mobile data services, providing a solid foundation for the evolution of mobile internet access.

Overall, Siemens' TDMA and GSM technologies have significantly influenced the development of mobile telecommunications. With features focused on capacity, flexibility, and quality, these systems established the groundwork for the advanced mobile networks we rely on today. Their legacy continues to be seen in the current generation of wireless technologies, highlighting the importance of innovation in the telecommunications industry.