31.5.02 06-S46 Body.fm i 37 Eagle Am Engl, A31008-H4500-A1-4-7619

20

Making a Call

 

 

 

During a call

The caller will hear the

 

 

busy tone.

Call waiting

~

You may need to register for this service with your service provider and set your phone accordingly (p. 81).

If an incoming call arrives while you are on another call, a special beep alerts you to the new incoming call. Your phone will also display the following options:

Call Fwd

-

or

If this is set, the caller will be forwarded to voicemail or another number you have entered (p. 53).

Selecting the end key will end both calls in TDMA, but you will receive a call back by the incoming call.

Swap

§Swap§ Select the soft key to place the current call on hold and accept the waiting call. (You may also press ,.)

To switch back and forth

between the two calls, select §Swap§ each time.

Set volume

During a call, you can adjust the earpiece volume by pressing the buttons on the left-hand side of the phone.

If a car kit is used, its volume setting does not affect the existing setting on your phone.

Reject©

§Reject§ Reject/end the incoming call. The caller will hear the busy tone.

or

Call Fwd If this is set, the caller will be forwarded to voicemail or another number you have entered (p. 53).

Rejectœ

§Reject§ Reject the incoming call.

Voice Memo

To record a call, press and hold the voice memo key (p. 55).

The use of this feature may be subject to restrictions under criminal law or other legal provisions. Please inform the other party in advance if you intend to record the call. You may only use this feature if the other party consents to being recorded.

To play back a recording (the person on the other end of the line also hears it), press the voice memo key on the right-hand side of the phone.

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Siemens TDMA 800, GSM 900, GSM 1900, TDMA 1900 manual During a call
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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.
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