Cisco Cisco IOS Software Release 12.3(11)T

To configure a timing delay on an FXO groundstart voice port, use the groundstart auto-tip command 
in voice-port configuration mode. To disable the configured timeout, use the no form of this command. 

groundstart auto-tip [delay timer] 

groundstart auto-tip [delay timer]

This command is disabled by default. If the command is used without the optional keyword, the default 
time of 200 ms is activated.

Voice-port configuration 

This command should only be used after you encounter call setup problems involving FXO groundstart 
analog voice ports. If these problems occur, first load the latest image for your Cisco IOS Release (for 
example, if you are running Release 12.3(11)T, you should replace this image with Release 12.3(11)T2. 
Upgrading the software image should eliminate the problem. If not, then use this command as a 
troubleshooting measure—it should be enabled in a configuration only if you encounter problems in 
connecting outgoing calls. After the groundstart auto-tip command is configured, the problem should 
not occur again.

Use the groundstart auto-tip command only for voice ports configured for FXO groundstart signaling. 

The following example sets the delay wait time for tip ground acknowledgment to 250 ms: 

Router# configure terminal 

Router(config)# voice-port 2/0/0

Router(config-voiceport)# shutdown

Router(config-voiceport)# groundstart auto-tip delay 250

Router(config-voiceport)# no shutdown

Router(config-voiceport)# exit 

Indicates that a specific delay time will be configured. 

Specifies the wait time in milliseconds that the FXO groundstart voice port 
will wait for a tip ground acknowledgment. 

12.3(11)T2

This command was introduced into Cisco IOS Release 12.3(11)T2.

Specifies that a voice port will be used in the connection.