api/python/telnyx-voice-advanced-python/SKILL.md
Advanced call control features including DTMF sending, SIPREC recording, noise suppression, client state, and supervisor controls. This skill provides Python SDK examples.
npx skillsauth add team-telnyx/telnyx-toolkit telnyx-voice-advanced-pythonInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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pip install telnyx
import os
from telnyx import Telnyx
client = Telnyx(
api_key=os.environ.get("TELNYX_API_KEY"), # This is the default and can be omitted
)
All examples below assume client is already initialized as shown above.
Updates client state
PUT /calls/{call_control_id}/actions/client_state_update — Required: client_state
response = client.calls.actions.update_client_state(
call_control_id="call_control_id",
client_state="aGF2ZSBhIG5pY2UgZGF5ID1d",
)
print(response.data)
Initiate a SIP Refer on a Call Control call.
POST /calls/{call_control_id}/actions/refer — Required: sip_address
response = client.calls.actions.refer(
call_control_id="call_control_id",
sip_address="sip:[email protected]",
)
print(response.data)
Sends DTMF tones from this leg.
POST /calls/{call_control_id}/actions/send_dtmf — Required: digits
response = client.calls.actions.send_dtmf(
call_control_id="call_control_id",
digits="1www2WABCDw9",
)
print(response.data)
Start siprec session to configured in SIPREC connector SRS.
POST /calls/{call_control_id}/actions/siprec_start
response = client.calls.actions.start_siprec(
call_control_id="call_control_id",
)
print(response.data)
Stop SIPREC session.
POST /calls/{call_control_id}/actions/siprec_stop
response = client.calls.actions.stop_siprec(
call_control_id="call_control_id",
)
print(response.data)
POST /calls/{call_control_id}/actions/suppression_start
response = client.calls.actions.start_noise_suppression(
call_control_id="call_control_id",
)
print(response.data)
POST /calls/{call_control_id}/actions/suppression_stop
response = client.calls.actions.stop_noise_suppression(
call_control_id="call_control_id",
)
print(response.data)
Switch the supervisor role for a bridged call.
POST /calls/{call_control_id}/actions/switch_supervisor_role — Required: role
response = client.calls.actions.switch_supervisor_role(
call_control_id="call_control_id",
role="barge",
)
print(response.data)
The following webhook events are sent to your configured webhook URL.
All webhooks include telnyx-timestamp and telnyx-signature-ed25519 headers for verification (Standard Webhooks compatible).
| Event | Description |
|-------|-------------|
| callReferStarted | Call Refer Started |
| callReferCompleted | Call Refer Completed |
| callReferFailed | Call Refer Failed |
| callSiprecStarted | Call Siprec Started |
| callSiprecStopped | Call Siprec Stopped |
| callSiprecFailed | Call Siprec Failed |
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