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

2090

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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?

3444

---

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

2321

---

What is equalisation? Why do we need it?

4904

---

What is Interleaving? Why do we need it?

2623

---

Why do we need digitisation?

3001

---

Explain Speech Coding.

3311

---

What is channel coding?

1890

---

What is Cell Splitting?

2012

---

What are LAPD and LAPDm?

2188

---

What is WPS?

1968

---

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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