1

Define digit manipulation.

Answer:

Digit manipulation encompasses adding, subtracting, and changing telephone numbers.

2

Of the digit manipulation techniques digit stripping, digit forwarding, digit prefixing, number expansion, and CLID, which are executed after the outbound dial peer is matched but before the numbers are transmitted?

Answer:

All but number expansion are executed after the outbound dial peer is matched but before the numbers are transmitted.

3

By default, POTS dial peers strip any outbound digits that explicitly match their destination pattern. What are two simple ways to prevent the router from stripping all the digits?

Answer:

Use either the no digit-strip command or the forward-digit number command under dial-peer configuration mode.

4

When is a number expansion executed, and how can you test its action?

Answer:

A number expansion is a global policy that is executed before any outbound dial peer is matched. The command show dialplan number number can test its action.

5

Given the following voice translation rule, how would a dialed string of 913012345678 be translated?

/^(91)301(.......)/ /12/
Answer:

It would translate to 12345678. The 91 is translated to 1, and then the contents of the second set (specified with the 2) are inserted. Because 301 is neither translated nor inserted, it is ignored.

6

Given the following voice translation rule, how would a dialed string of 913012345678 be translated?

/^(91)301(.......)/ /17002/
Answer:

It would translate to 917002345678. The contents of the first set are inserted, the 301 is translated to 700, and then the contents of the second set are inserted.

Part I: Voice Gateways and Gatekeepers

Gateways and Gatekeepers

Part II: Gateways

Media Gateway Control Protocol

H.323

Session Initiation Protocol

Circuit Options

Connecting to the PSTN

Connecting to PBXs

Connecting to an IP WAN

Dial Plans

Digit Manipulation

Influencing Path Selection

Configuring Class of Restrictions

SRST and MGCP Gateway Fallback

DSP Resources

Using Tcl Scripts and VoiceXML

Part III: Gatekeepers

Deploying Gatekeepers

Gatekeeper Configuration

Part IV: IP-to-IP Gateways

Cisco Multiservice IP-to-IP Gateway

Appendix A. Answers to Chapter-Ending Review Questions

Index



Cisco Voice Gateways and Gatekeepers
Cisco Voice Gateways and Gatekeepers
ISBN: 158705258X
EAN: 2147483647
Year: 2004
Pages: 218

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