1.What is the difference between Diplexer and Duplexer and
what position?
2. What is the different between CDU C and CDU A
3. How do you link a T1 from the 1st BTS to 2nd BTS
4. What is the value for TEI 1st T1?
5. What is the SSI?
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Answer / sahani.santosh@gmail.com
1.diplexer is used if we want to use same antenna line[feeder] for two different type of waves.like using same feeder for gsm n cdma transmission to gsm..even if to physically separateed antennas are there only a set of feeder will be required DUPLEXER is used if we want same antenna to transmit n receive..instead of using two separate ones..
3.There r so many ways o transfering E1/t1 FROM ONE BTS TO ANOTHER..used twisted pair cable w E1T1 card or RRI w in use but power off ..so many ways..
4.SS7 is the protocol used for transmissin of non voice dats transfer[signalling ],that r used for call setup etc
| Is This Answer Correct ? | 16 Yes | 4 No |
Answer / farhan chaudhry
What is the difference between Diplexer and Duplexer and
what position?
Used for separating sending and receiving signals to/from
antenna.
What is the different between CDU C and CDU A
CDU A uses filter combiner and c uses hybrid
| Is This Answer Correct ? | 19 Yes | 16 No |
Explain imsi?
what is GSM?
Explain the cycling frequency hopping in gsm technology?
What do you mean by extended cell?
Explain what is the difference between diplexer and duplexer and what position?
What is tmsi in gsm technology?
What do you mean by link budget?
Explain the maximum data rate supported by a gsm system?
Explain synthesised frequency hopping?
What is the value for tei 1st t1?
Does extended cell have any impact on the system? If yes, what?
What is imei in gsm technology?
WiFi Protocols 
