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

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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