A voice engineer is troubleshooting an issue that involves incoming calls to POTS lines. Which command verifies the digits that are received by voice-port?

The correct answer is C. debug vtsp dsp. 'debug vtsp dsp' (Voice Telephony Service Provider DSP) traces the low-level DSP signaling events on voice ports, including the detection and reporting of DTMF or pulse digits received from the PSTN on POTS lines. This is the correct command to verify which digits the voice-port

Troubleshooting

Question

Options

Adebug voip dial-per
Bdebug vtsp session
Cdebug vtsp dsp
Ddebug call treatment
Edebug voice protocol

How the community answered

(23 responses)

B
9% (2)
C
87% (20)
E
4% (1)

Explanation

'debug vtsp dsp' (Voice Telephony Service Provider DSP) traces the low-level DSP signaling events on voice ports, including the detection and reporting of DTMF or pulse digits received from the PSTN on POTS lines. This is the correct command to verify which digits the voice-port actually receives. 'debug vtsp session' traces higher-level session state, 'debug voip dial-peer' shows dial-peer matching, 'debug call treatment' shows call treatment logic, and 'debug voice protocol' is not a standard IOS command for this purpose.

Topics

#debug vtsp dsp#POTS troubleshooting#voice-port#digit verification

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