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Using the ROM Monitor, Entering the ROM Monitor Mode, SUMMARY STEPS

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A A P P E N D I X Using the ROM Monitor This appendix describes the ROM monitor (also called the bootstrap program), which is the firmware that runs when you power on or restart the Cisco VG202 and Cisco VG204 voice gateways (VG). During normal operation, the ROM monitor helps to initialize the processor hardware and boot the operating system software. You can also use the ROM monitor to help you isolate or rule out hardware problems that you encounter while installing your voice gateway. This appendix contains the following sections: • Entering the ROM Monitor Mode, page A-1 • ROM Monitor Commands, page A-2 • Command Descriptions, page A-3 • Configuration Register, page A-4 • Console Download, page A-6 • Debug Commands, page A-7 • Exiting the ROM Monitor, page A-8 Entering the ROM Monitor Mode To use the ROM monitor, you must be using a terminal or PC that is connected to the voice gateway over the console port. Perform these steps to configure the voice gateway to boot up in ROM monitor mode the next time it is rebooted. SUMMARY STEPS 1. enable 2. configure terminal 3. config-register value 4. exit 5. reload OL-16191-01 Cisco VG202 and Cisco VG204 Voice Gateways Software Configuration Guide A-1

Section	Page
Cisco VG202 and Cisco VG204 Voice Gateways Software Configuration Guide	1
Contents	3
Preface	5
Understanding Interface Numbering and Cisco IOS Software Basics	7
Identifying the Cisco VG202 and Cisco VG204 Voice Gateways	7
Cisco VG202 Voice Gateway	8
Port Numbering Conventions	9
Understanding Cisco IOS Software Basics	10
Getting Help	10
Command Modes	10
Undoing a Command or Feature	11
Saving Configuration Changes	12
Upgrading to a New Cisco IOS Release	12
Cisco VG202 and Cisco VG204 Voice Gateways Deployment Scenario	12
Where to Go Next	13
Using the setup Command Facility	15
Before Powering On Your Cisco Voice Gateway	15
Using the setup Command Facility	16
Configuring Global Parameters	16
Completing the Configuration	19
Configuring with the Command-Line Interface	21
Configuring the Hostname and Password	21
SUMMARY STEPS	22
DETAILED STEPS	22
Verifying the Hostname and Password	23
Configuring Fast Ethernet Interfaces	23
SUMMARY STEPS	24
DETAILED STEPS	24
Example	25
Saving Configuration Changes	25
SUMMARY STEPS	25
DETAILED STEPS	26
Configuring Voice	27
Prerequisites	27
Configuring the Voice Interface	28
Auto-Configuration on the Cisco VG202 and Cisco VG204 Voice Gateways	29
Restrictions for Configuring Auto-Configuration	29
Auto-Configuration With a DHCP Server	30
SUMMARY STEPS	30
DETAILED STEPS	30
Auto-Configuration Without a DHCP Server	31
SUMMARY STEPS	31
DETAILED STEPS	32
Configuring the Voice Interface for Cisco CallManager	33
SUMMARY STEPS	33
DETAILED STEPS	34
Configuring the MAC Address Convention	36
Configuring Calls	37
Call Transfer	37
SUMMARY STEPS	37
DETAILED STEPS	38
Call Waiting	38
Three-Party Conferencing	39
Call ID	39
SUMMARY STEPS	39
DETAILED STEPS	39
Using the ROM Monitor	41
Entering the ROM Monitor Mode	41
SUMMARY STEPS	41
DETAILED STEPS	42
ROM Monitor Commands	42
Command Descriptions	43
Recovering Boot and System Images	44
Using the xmodem Command	44
Configuration Register	44
Changing the Configuration Register Manually	45
Changing the Configuration Register Using Prompts	45
Console Download	46
Command Description	46
Error Reporting	47
Debug Commands	47
Exiting the ROM Monitor	48