The Cellular Connection 2 phần 4 pptx

... The only real radio link in a cellular system is between the cellular telephone and the cell site; the rest of the network uses landline 122 GLOSSARY GLOSSARY A Carrier The nonwireline carrier. See ... & Sons, Inc. ISBNs: 0 -47 1-316 52- 0 (Paper); 0 -47 1 -20 340 -8 (Electronic) 121 telecommunications facilities, although some of these may be microwave radio. Cell Spli...

Ngày tải lên: 07/08/2014, 21:20

... systems. The Cellular Connection: A Guide to Cellular Telephones, Fourth Edition. Robert A. Steuernagel Copyright  20 00 John Wiley & Sons, Inc. ISBNs: 0 -47 1-316 52- 0 (Paper); 0 -47 1 -20 340 -8 (Electronic) 19 telephones ... Ericsson, NorTel, and Nokia, among others. Cellular HOW LICENSES WERE GRANTED 21 3 THE BUSINESS OF CELLULAR PHONES The business of cellular p...

Ngày tải lên: 07/08/2014, 21:20

... either your phone loses the signal from the cell site or the cell loses the signal from your phone. These two things do not always happen simultaneously ; The Cellular Connection: A Guide to Cellular ... cause the system to disconnect you, thinking you’re no longer there. Should you experience these dropouts, tell the party at the other end of the line that you may be d...

Ngày tải lên: 07/08/2014, 21:20

... takes. The Cellular Connection: A Guide to Cellular Telephones, Fourth Edition. Robert A. Steuernagel Copyright  20 00 John Wiley & Sons, Inc. ISBNs: 0 -47 1-316 52- 0 (Paper); 0 -47 1 -20 340 -8 (Electronic) 107 If ... using the phone once they get their hands on it — just notify your cellular service provider— but why give them the opportunity to steal it in the first pl...

Ngày tải lên: 07/08/2014, 21:20

... making the connection much The Cellular Connection: A Guide to Cellular Telephones, Fourth Edition. Robert A. Steuernagel Copyright  20 00 John Wiley & Sons, Inc. ISBNs: 0 -47 1-316 52- 0 (Paper); ... expensive cable, cellular telephones can be located, either permanently or temporarily, wherever they are needed. This versatil- ity gives cellular the crucial economic ed...

Ngày tải lên: 07/08/2014, 21:20

... and the voice from the other end of the connection usually came through a loudspeaker. You couldn’t dial a call; instead the mobile operator at the other end of your radio link established the connection ... you approach the limit of the range of one cell, you will enter another before the quality of service deteriorates. Furthermore, the limited range of cellular tr...

Ngày tải lên: 07/08/2014, 21:20

... tender with the young, compassionate with the aged, sympathetic with the striving, and tolerant of the weak and the strong. Because someday in life, you will have been all of these. As ... all like the woman in the ship's passageway, in whom the music still echoes. We are the sum of all the lives we once lived. We show the grown- up part, but inside we are sti...

Ngày tải lên: 26/01/2014, 12:20

Ngày tải lên: 09/07/2014, 21:21

... 119 Digital, 24 , 27 , 92 93, 1 12, 113—116, 121 , 122 , 1 24 , 127 Dropouts, 93, 95, 97—101 DTMF, 1 24 Dual-mode, 27 , 1 14, 115, 1 24 Dual NAM, 72, 1 24 E Electronic serial number, see ESN Emergency, 21 , 26 , 29 , 41 , ... 115 access, 32 40 , 121 airtime, 26 , 34 37, 41 , 42 , 44 , 55, 61, 90, 95 activation, 31 change, 32 interconnection, 35, 42 landline, 37, 42 long d...

Ngày tải lên: 07/08/2014, 21:20

... rough The Cellular Connection: A Guide to Cellular Telephones, Fourth Edition. Robert A. Steuernagel Copyright  20 00 John Wiley & Sons, Inc. ISBNs: 0 -47 1-316 52- 0 (Paper); 0 -47 1 -20 340 -8 (Electronic) 9 Figure ... (Electronic) 9 Figure 2. 2 CELLULAR FREQUENCIES Cellular frequencies range from 8 24 to 8 94 MHz, with a gap between 849 and 869 MHz for use by other comm...

Ngày tải lên: 07/08/2014, 21:20