Specifications

xi
Cisco 1751 Router Software Configuration Guide
OL-1070-01
debug vtsp dsp
Use the debug vtsp dsp EXEC command to show messages from the digital signal processor (DSP) on
the V.Fast Class (VFC) modem to the router. Use the no form of this command to disable debugging
output.
[no] debug vtsp dsp
Usage Guidelines
The debug vtsp dsp command shows messages from the DSP on the VFC to the router; this command
is useful if you suspect that the VFC is not functional. It is a simple way to check if the VFC is
responding to off-hook indications.
Sample Display
The following output shows the collection of DTMF digits from the DSP:
router# debug vtsp dsp
*Nov 30 00:44:34.491: vtsp_process_dsp_message: MSG_TX_DTMF_DIGIT: digit=3
*Nov 30 00:44:36.267: vtsp_process_dsp_message: MSG_TX_DTMF_DIGIT: digit=1
*Nov 30 00:44:36.571: vtsp_process_dsp_message: MSG_TX_DTMF_DIGIT: digit=0
*Nov 30 00:44:36.711: vtsp_process_dsp_message: MSG_TX_DTMF_DIGIT: digit=0
*Nov 30 00:44:37.147: vtsp_process_dsp_message: MSG_TX_DTMF_DIGIT: digit=2
debug vtsp error
Use the debug vtsp error command to display processing errors in the voice telephony service
provider. Use the no form of this command to disable vtsp error debugging.
[no] debug vtsp error
Usage Guidelines
The debug vtsp error command can be used to check for mismatches in interface capabilities.