How to select lightning arrester for line trap? What are the criteria?

2087

---

What is mean by Compression technic and its formula? How many types of adaptors are there? How adaptive algorithm works for speech compression using Cosine packet transform?

1978

---

What is the difference between Synthesised Frequency Hopping and Base Band Frequency Hopping?

3434

---

Which uplink/downlink spectrum is allocated to DCS-1800?

2315

---

What is equalisation? Why do we need it?

4891

---

What is Interleaving? Why do we need it?

2612

---

Why do we need digitisation?

2989

---

Explain Speech Coding.

3303

---

What is channel coding?

1880

---

What is Cell Splitting?

2005

---

What are LAPD and LAPDm?

2171

---

What is WPS?

1962

---

What is Cycling Frequency Hopping?

2611

---

What is HSN? How do we apply it?

2065

---

What is DTX? Why is it used?

1872

---