2.2 Radio Frequency Power Levels:

Between the DCS 1800 and both GSM Systems are differences regarding the power level. DCS 1800 basically needs lower power levels. If the performance of a MS for GSM system was certified of 2W (Power Class 4), then in the DCS-1800 system it is only 1W (Power Class 1). There are also reduced BTS power levels due to microcell applications, which means instead of the 40W (Power Class 4) in the GSM system DCS 1800 needs only 20W (Power Class 1).

Preferences

GSM 900

E-GSM

DCS 1800

Frequency band

MHz

MHz

MHz

uplink:

890 - 915

880 - 915

1710 -1785

downlink:

935 - 960

925 - 960

1805 - 1880

Radio Channels

124

174

374

 

 

 

 

max. BS-Power

40 W (46 dBm)

20W (43 dBm)

 

 

 

 

max. MS-Power

2 W (33 dBm)

1W (30 dBm)

2.3 Speech Codec

The CMD-J16 supports the following speech codecs.

Full Rate (FR) Codec

Half Rate (HR) Codec

Enhanced Full Rate (EFR) Codec

The speech codec forms the human voice into a digital signal, which is sent in the GSM network. The GSM system currently has three different speech codec standards.

At first, the Full Rate (FR) Codec was introduced. With new requirements concerning speech quality and availability of radio channel resources two further standards were introduced, the Half Rate (HR) Codec and the Enhanced Full Rate (EFR) Codec. The Half Rate (HR) Codec requires only half the channel capacity of a Full Rate (FR) Channel. The Enhanced Full Rate (EFR) Codec requires the same radio channel resources as a Full Rate

(FR) Codec but offers Fixed Line quality with superior vocal clarity.

2.4 Languages

The CMD-J16 supports the following languages:

Taiwan:

English

Chinese Simplified

Chinese Traditional

 

 

 

 

 

(for Taiwan)

Hong Kong:

 

 

 

 

English

Chinese Simplified

Chinese Traditional

The CMD-J5 supports the following languages:

Bulgarian

German

Romanian

Croatian

Greek

Russian

Czech

Hungarian

Slovak

Danish

Italian

Slovene

Dutch

Norwegian

Spanish

English

Polish

Swedish

Finnish

Portuguese

Turkish

French

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Sony CMD-J16 specifications Radio Frequency Power Levels, Speech Codec, Languages, Preferences GSM, Dcs

CMD-J16 specifications

The Sony CMD-J16, released in the late 1990s, exemplifies the innovative spirit of mobile communication technology during that era. This compact mobile phone showcased advanced features for its time, appealing to tech enthusiasts and casual users alike.

One of the standout characteristics of the CMD-J16 is its sleek design. Weighing in at just 113 grams and measuring 135 x 52 x 21 mm, this phone was incredibly portable. The device sported a monochrome display, which supported a resolution of 101 x 32 pixels, offering a simple yet functional interface for users to navigate. Its intuitive button layout made dialing and text input a straightforward process.

In terms of connectivity, the CMD-J16 operated on GSM technology, which was becoming increasingly popular worldwide. This allowed users to enjoy reliable voice calls and text messaging services. The device supported dual-band GSM, which provided increased coverage and versatility for international travelers.

The phone was equipped with several features that made it user-friendly. One such feature was the integrated phonebook, capable of storing up to 250 contacts. Each contact could hold multiple phone numbers and even a fax number, making it easy for users to manage their communication needs. The CMD-J16 also supported SMS messaging, allowing users to send and receive text messages seamlessly.

Another notable aspect of the CMD-J16 is its long-lasting battery life. The phone housed a NiMH battery, which offered up to 100 hours of standby time and up to 4 hours of talk time, ensuring users could stay connected for extended periods without frequent recharging.

The phone also came with a range of personalization options. Users could select from various ringtones, including polyphonic options, to customize their experience. The device allowed for basic games, adding a touch of entertainment during idle moments.

In summary, the Sony CMD-J16 was a remarkable mobile phone that combined practicality with style. Its compact design, user-friendly features, and reliable performance made it a popular choice among consumers in the late 90s. While it may now be considered a relic in the rapidly evolving world of mobile technology, the CMD-J16 remains a testament to Sony’s commitment to innovation and quality in the telecommunications landscape.