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

2035

---

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?

1919

---

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

3361

---

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

2252

---

What is equalisation? Why do we need it?

4795

---

What is Interleaving? Why do we need it?

2565

---

Why do we need digitisation?

2945

---

Explain Speech Coding.

3260

---

What is channel coding?

1839

---

What is Cell Splitting?

1954

---

What are LAPD and LAPDm?

2124

---

What is WPS?

1915

---

What is Cycling Frequency Hopping?

2542

---

What is HSN? How do we apply it?

2006

---

What is DTX? Why is it used?

1809

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