Cisco Systems (VISM)

Contents

Cisco VISM Installation and Configuration Guide

Release 3.0, Part Number OL-2521-01 Rev. D0, June 2004

Installing VISM-PR Cards in MGX 8000 Series Chassis 1-13

MGX 8850 and MGX 8250 Chassis 1-14

MGX 8230 Chassis 1-15

Installing VISM and VISM-PR Front and Back Cards 1-15

Installing a VISM or VISM-PR Front Card 1-15

Installing a VISM Back Card 1-16

Connecting Cables to Cards 1-16

Removing VISM and VISM-PR Front and Back Cards 1-17

Removing a VISM or VISM-PR Front Card 1-17

Removing a VISM Back Card 1-17

Applying Power to the VISM Card 1-18

Installing VISM Software Upgrades 1-18

Software Upgrades 1-20

Prerequisites 1-20

VISM/VISM-PR Upgrades with PXM1 1-20

Download VISM/VISM-PR Boot Code and Firmware to PXM1 1-20

Upgrade VISM/VISM-PR Firmware with PXM1 Card 1-21

Boot Code Upgrade Procedure with PXM1 Cards 1-23

VISM-PR Upgrades with PXM1E and PXM45 1-23

Download VISM-PR Boot Code and Firmware to PXM1E and PXM45 1-24

Upgrade VISM-PR Firmware with PXM1E and PXM45 Cards 1-24

Boot Code Upgrade Procedure with PXM1E and PXM45 Cards 1-25

VISM/VISM-PR Downgrade Procedure 1-25

VISM to VISM-PR Hardware Upgrade 1-26

CHAPTER

2Telephony Applications Using VISM 2-1

Tandem Switch Offloading 2-1

Multiservice Access 2-3

AAL2 Trunking 2-3

CHAPTER

3VISM Functional Description 3-1

TDM Line-Handling Function 3-2

Bearer Processing Function 3-3

Echo Cancellation, Voice Compression, A/Mu Law Conversion 3-3

Voice Activity Detection and Silence Suppression 3-4

Fax and Modem Tone Detection 3-4

Jitter Control 3-5

CAS Handling 3-5

Signaling Function 3-5