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Voice over Digital Subscriber Line (VoDSL)

Table of Contents:
Definition and Overview
1. DSL Primer
2. Interworkings of DSL
3. With All of This Variety, How Big Is the Market?
4. About ADSL
5. About VoDSL
6. How Does VoDSL Work?
7. Transport Methods within VoDSL
8. Standards Groups Involved with VoDSL
9. The Future of VoDSL
Self-Test
Glossary
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Self-Test
1. DSL allows the carrier to provide both voice and data services on the same pair of copper wires. What other services have done the same type of integration?
a. ISDN and DOV
b. CMIP and SNMP
c. ISDN and CMIP
2. Which two types of DSL are used as T1 replacements?
a. ADSL and HSDL
b. HDSL and G.lite
c. HDSL and SDSL
d. ISDL and HDSL
3. The UAWG created the G.lite ADSL standard. Why is it called lite?
a. It provides slower speeds than a nonlite version.
b. It uses copper that is of a lighter gauge.
c. It does not require a splitter.
d. none of the above
4. DMT, CAP, and QAM are all methods of which the following?
a. packetizing voice onto data networks
b. line coding
c. compression
d. all of the above
5. RADSL is called so because it can accomplish which of the following tasks?
a. charge different rates depending on service type offered
b. change the rate depending on time of day
c. modify the throughput rate depending on line quality
6. Which type of carrier would be most likely to deploy VoDSL?
a. IXC
b. CLEC
c. ILEC
d. ISP
e. all of the above
7. What type of device is needed to interconnect the customer’s premises and the DSL service?
a. DSLAM
b. CO switch
c. DLC
d. IAD
8. What type of transport does the ADSL Forum recommend in the first phase of VoDSL?
a. IP
b. ATM
c. frame relay
d. Q.SIQ
9. What is the name of the ADSL Forum standard that supports VoDSL?
a. CMIP
b. VBR–RT
c. BLES
d. MDNS
10. What are the two purposes of the ADSL Forum?
a. marketing information and architectures
b. developing architectures and setting new standards
c. hosting the ADSL meetings and publishing results
d. marketing information and standards interworking
Glossary >>

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