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

2089

---

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?

1983

---

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

3440

---

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

2319

---

What is equalisation? Why do we need it?

4901

---

What is Interleaving? Why do we need it?

2621

---

Why do we need digitisation?

2998

---

Explain Speech Coding.

3307

---

What is channel coding?

1886

---

What is Cell Splitting?

2011

---

What are LAPD and LAPDm?

2186

---

What is WPS?

1967

---

What is Cycling Frequency Hopping?

2616

---

What is HSN? How do we apply it?

2067

---

What is DTX? Why is it used?

1874

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