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Testing Quality of Service (QoS) at the Point of PSTN and Voice-over–Packet (VoP) Convergence, Focusing on Media Gateway Performance

Table of Contents:
Definition and Overview
1. The Role of the Media Gateway in the Converging Network
2. Testing a Device Control Interface
3. Verifying Voice Paths across Dissimilar Network Types, a.k.a. Trunk Testing
4. Measuring Voice Quality across a Media Gateway
Self-Test
Glossary
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Self-Test
1. Which of the following is not a standard for voice-quality measurement?
a. H.323
b. P.861
c. P.862
2. The following are call control protocols: SIP, BICC, ISUP.
a. True
b. False
3. The following are device control protocols: IPDC, H.248, MEGACO, MGCP.
a. True
b. False
4. What are factors that a carrier must consider when deploying a packet-based network architecture?
a. Cost
b. Floor space
c. Power
d. Manpower
e. All of the above
5. Customers expect voice calls over a packet network to:
a. Be free
b. Be of the same voice quality as a circuit-switched network
c. Cost more
d. None of the above
6. Conformance testing is the process of:
a. Ensuring that a protocol is implemented in accordance with published standards using third-party equipment
b. Attending interoperability testing events
c. b and c
d. None of the above
7. What are some of the dangers of using an in-house test tool?
a. Continuing development and maintenance costs
b. Inadequate testing capabilities
c. Limited performance statistics
d. All of the above
e. None of the above
8. Load testing is the process of:
a. Determining how much power the equipment requires
b. Subjecting the equipment to maximum busy-hour call attempts
c. Stacking heavy weights on the equipment cabinet until it is crushed
9. Which of the following are factors that affect voice quality on packet-based circuits?
a. Echo
b. Jitter
c. Delay
d. Packet loss
e. Duplicated packets
f. All of the above

Glossary >>

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