O'Reilly logo

CCNA Voice: Official Exam Certification Guide by Jeremy Cioara, Kris A. Krake, Michael J. Cavanaugh

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Appendix C. Memory Tables

Chapter 5

Table 5.2. Separators for Use with the button Command

Separator Character

Function

:

 

b

 

f

 

m

 

o

 

c

 

x

 

s

 

w

 

Table 5.3. restart Versus reset Commands

Command

Used For

 

Phone line changes

 

Speed dial changes

 

DHCP scope changes

 

Date and time changes

 

Firmware changes

 

Locale changes

 

Changes to button (services, messages, directories) URLs

 

Voice mail number changes

Chapter 7

Table 7.2. Audio Codec Bandwidth and MOS Values

Codec

Bandwidth Consumed

MOS

G.711

 

4.1

Internet Low Bitrate Codec (iLBC)

 

4.1

G.729

 

3.92

G.726

32 kbps

3.85

G.729a

 

3.7

G.728

16 kbps

3.61

Table 7.7. Protocol Summary

Standards Body

Industry Support

Used on Gateways

Used on Cisco IP Phones

Architecture

ITU

Excellent

Yes

No

Peer-to-peer

IETF

Fair

Yes

Yes, limited

Client/server

IETF

Very good

Yes

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required