Appendix B Formatting the Compact Flash Memory Cards

Formatting Procedures for Compact Flash Memory Cards

System CompactFlash directory:

File

Length

Name/status

 

 

addr

 

fcksum

ccksum

1

6658376

cvg224-i-mz

 

 

0x40

 

0xE0FF

0xE0FF

2

14221136

 

cvg224-telcoent-mz

 

0x6599C8

0x5C3D

0x5C3D

[20879640 bytes used, 107308776 available, 128188416 total]

125184K bytes of ATA System CompactFlash (Read/Write)

Chip information NOT available.

Internal Card with Class C Flash File System

The geometry and format information is displayed in this format:

11# show flash: all

-#- --

length-- -----

date/time------

path

16658376 Mar 01 1993 04:27:46 cvg224-i-mz

25268224 bytes available (6664192 bytes used)

******** ATA Flash Card Geometry/Format Info ********

ATA CARD GEOMETRY

 

Number of

Heads:

4

Number of

Cylinders

490

Sectors per Cylinder

32

Sector Size

512

Total Sectors

62720

ATA CARD FORMAT

 

Number of

FAT Sectors

31

Sectors Per Cluster

8

Number of

Clusters

7796

Number of

Data Sectors

62560

Base Root

Sector

155

Base FAT Sector

93

Base Data

Sector

187

Formatting Compact Flash Memory as a Class B Flash File System

Use these formatting commands to:

Format compact flash memory cards with a Class B flash file system (LEFS)

Remove the files from a compact flash memory card previously formatted with a Class B flash file system

For external compact flash memory cards, enter the erase slot0: command.

For internal compact flash memory cards, enter the erase flash: command.

The following example shows sample output for formatting an external compact flash memory card with a Class B flash file system:

Router# erase slot0:

Erasing the slot0 filesystem will remove all files! Continue? [confirm]

Current DOS File System flash card in slot0: will be formatted into Low

End File System flash card! Continue? [confirm]

Erasing device...

Cisco VG224 Voice Gateway Software Configuration Guide

 

OL-5005-01

B-3

 

Page 45
Image 45
Cisco Systems VG224 Geometry and format information is displayed in this format, 11# show flash all, Router# erase slot0

VG224 specifications

The Cisco Systems VG224 is a versatile VoIP (Voice over Internet Protocol) gateway designed to facilitate the integration of traditional phone systems with modern IP-based communications. This device plays a crucial role in providing connectivity between analog phones and digital networks, allowing organizations to transition smoothly from legacy telephony systems to IP telephony.

One of the standout features of the VG224 is its ability to support up to 24 analog phone lines. This scalability makes it an ideal choice for small to medium-sized businesses that require a dependable solution to handle their telephony needs without overspending on infrastructure. The VG224 acts as a bridge, converting analog voice signals into digital IP packets, thus enabling seamless communication over the Internet or intranets.

The VG224 is equipped with a range of technologies that enhance its functionality and reliability. Voice activity detection (VAD), comfort noise generation (CNG), and echo cancellation are just some examples of the advanced audio processing techniques integrated into the VG224. These technologies improve call quality by ensuring clear and uninterrupted conversations, even under varying network conditions.

In terms of characteristics, the VG224 features a user-friendly interface with a web-based management console, making it easy for network administrators to configure and manage the device remotely. This streamlined approach to management is crucial for businesses that require quick adjustments to their communication infrastructure without the need for extensive technical knowledge.

The VG224 supports multiple signaling protocols, including H.323, MGCP (Media Gateway Control Protocol), and SIP (Session Initiation Protocol). This flexibility allows it to integrate seamlessly with various IP telephony systems and offers businesses the option to utilize their preferred communication standards. Additionally, the device supports power over Ethernet (PoE), providing the convenience of powering devices through the same cable used for data connectivity, thus reducing the need for additional power sources.

In conclusion, the Cisco Systems VG224 is a robust VoIP gateway that combines advanced technology with user-friendly features. Its capacity to support up to 24 analog lines, along with its compatibility with various signaling protocols, makes it an excellent choice for businesses looking to modernize their telecommunication systems while maintaining the reliability of traditional analog connections. With its ease of management and high-quality voice processing capabilities, the VG224 stands out as a key asset for any organization aiming to optimize its communication infrastructure.