From telnyx-python
Configure Telnyx phone numbers' voicemail, voice channels, and E911 services using Python SDK. Examples for listing/updating non-US voice channels and error handling.
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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.
All API calls can fail with network errors, rate limits (429), validation errors (422), or authentication errors (401). Always handle errors in production code:
import telnyx
try:
result = client.messages.send(to="+13125550001", from_="+13125550002", text="Hello")
except telnyx.APIConnectionError:
print("Network error — check connectivity and retry")
except telnyx.RateLimitError:
# 429: rate limited — wait and retry with exponential backoff
import time
time.sleep(1) # Check Retry-After header for actual delay
except telnyx.APIStatusError as e:
print(f"API error {e.status_code}: {e.message}")
if e.status_code == 422:
print("Validation error — check required fields and formats")
Common error codes: 401 invalid API key, 403 insufficient permissions,
404 resource not found, 422 validation error (check field formats),
429 rate limited (retry with exponential backoff).
for item in page_result: to iterate through all pages automatically.Returns the non-US voice channels for your account. voice channels allow you to use Channel Billing for calls to your Telnyx phone numbers. Please check the Telnyx Support Articles section for full information and examples of how to utilize Channel Billing.
GET /channel_zones
page = client.channel_zones.list()
page = page.data[0]
print(page.id)
Returns: channels (int64), countries (array[string]), created_at (string), id (string), name (string), record_type (enum: channel_zone), updated_at (string)
Update the number of Voice Channels for the Non-US Zones. This allows your account to handle multiple simultaneous inbound calls to Non-US numbers. Use this endpoint to increase or decrease your capacity based on expected call volume.
PUT /channel_zones/{channel_zone_id} — Required: channels
channel_zone = client.channel_zones.update(
channel_zone_id="550e8400-e29b-41d4-a716-446655440000",
channels=0,
)
print(channel_zone.id)
Returns: channels (int64), countries (array[string]), created_at (string), id (string), name (string), record_type (enum: channel_zone), updated_at (string)
Returns the dynamic emergency addresses according to filters
GET /dynamic_emergency_addresses
page = client.dynamic_emergency_addresses.list()
page = page.data[0]
print(page.id)
Returns: administrative_area (string), country_code (enum: US, CA, PR), created_at (string), extended_address (string), house_number (string), house_suffix (string), id (string), locality (string), postal_code (string), record_type (string), sip_geolocation_id (string), status (enum: pending, activated, rejected), street_name (string), street_post_directional (string), street_pre_directional (string), street_suffix (string), updated_at (string)
Creates a dynamic emergency address.
POST /dynamic_emergency_addresses — Required: house_number, street_name, locality, administrative_area, postal_code, country_code
Optional: created_at (string), extended_address (string), house_suffix (string), id (string), record_type (string), sip_geolocation_id (string), status (enum: pending, activated, rejected), street_post_directional (string), street_pre_directional (string), street_suffix (string), updated_at (string)
dynamic_emergency_address = client.dynamic_emergency_addresses.create(
administrative_area="TX",
country_code="US",
house_number="600",
locality="Austin",
postal_code="78701",
street_name="Congress",
)
print(dynamic_emergency_address.data)
Returns: administrative_area (string), country_code (enum: US, CA, PR), created_at (string), extended_address (string), house_number (string), house_suffix (string), id (string), locality (string), postal_code (string), record_type (string), sip_geolocation_id (string), status (enum: pending, activated, rejected), street_name (string), street_post_directional (string), street_pre_directional (string), street_suffix (string), updated_at (string)
Returns the dynamic emergency address based on the ID provided
GET /dynamic_emergency_addresses/{id}
dynamic_emergency_address = client.dynamic_emergency_addresses.retrieve(
"182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e",
)
print(dynamic_emergency_address.data)
Returns: administrative_area (string), country_code (enum: US, CA, PR), created_at (string), extended_address (string), house_number (string), house_suffix (string), id (string), locality (string), postal_code (string), record_type (string), sip_geolocation_id (string), status (enum: pending, activated, rejected), street_name (string), street_post_directional (string), street_pre_directional (string), street_suffix (string), updated_at (string)
Deletes the dynamic emergency address based on the ID provided
DELETE /dynamic_emergency_addresses/{id}
dynamic_emergency_address = client.dynamic_emergency_addresses.delete(
"182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e",
)
print(dynamic_emergency_address.data)
Returns: administrative_area (string), country_code (enum: US, CA, PR), created_at (string), extended_address (string), house_number (string), house_suffix (string), id (string), locality (string), postal_code (string), record_type (string), sip_geolocation_id (string), status (enum: pending, activated, rejected), street_name (string), street_post_directional (string), street_pre_directional (string), street_suffix (string), updated_at (string)
Returns the dynamic emergency endpoints according to filters
GET /dynamic_emergency_endpoints
page = client.dynamic_emergency_endpoints.list()
page = page.data[0]
print(page.dynamic_emergency_address_id)
Returns: callback_number (string), caller_name (string), created_at (string), dynamic_emergency_address_id (string), id (string), record_type (string), sip_from_id (string), status (enum: pending, activated, rejected), updated_at (string)
Creates a dynamic emergency endpoints.
POST /dynamic_emergency_endpoints — Required: dynamic_emergency_address_id, callback_number, caller_name
Optional: created_at (string), id (string), record_type (string), sip_from_id (string), status (enum: pending, activated, rejected), updated_at (string)
dynamic_emergency_endpoint = client.dynamic_emergency_endpoints.create(
callback_number="+13125550000",
caller_name="Jane Doe Desk Phone",
dynamic_emergency_address_id="0ccc7b54-4df3-4bca-a65a-3da1ecc777f0",
)
print(dynamic_emergency_endpoint.data)
Returns: callback_number (string), caller_name (string), created_at (string), dynamic_emergency_address_id (string), id (string), record_type (string), sip_from_id (string), status (enum: pending, activated, rejected), updated_at (string)
Returns the dynamic emergency endpoint based on the ID provided
GET /dynamic_emergency_endpoints/{id}
dynamic_emergency_endpoint = client.dynamic_emergency_endpoints.retrieve(
"182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e",
)
print(dynamic_emergency_endpoint.data)
Returns: callback_number (string), caller_name (string), created_at (string), dynamic_emergency_address_id (string), id (string), record_type (string), sip_from_id (string), status (enum: pending, activated, rejected), updated_at (string)
Deletes the dynamic emergency endpoint based on the ID provided
DELETE /dynamic_emergency_endpoints/{id}
dynamic_emergency_endpoint = client.dynamic_emergency_endpoints.delete(
"182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e",
)
print(dynamic_emergency_endpoint.data)
Returns: callback_number (string), caller_name (string), created_at (string), dynamic_emergency_address_id (string), id (string), record_type (string), sip_from_id (string), status (enum: pending, activated, rejected), updated_at (string)
Returns the US Zone voice channels for your account. voice channels allows you to use Channel Billing for calls to your Telnyx phone numbers. Please check the Telnyx Support Articles section for full information and examples of how to utilize Channel Billing.
GET /inbound_channels
inbound_channels = client.inbound_channels.list()
print(inbound_channels.data)
Returns: channels (integer), record_type (string)
Update the number of Voice Channels for the US Zone. This allows your account to handle multiple simultaneous inbound calls to US numbers. Use this endpoint to increase or decrease your capacity based on expected call volume.
PATCH /inbound_channels — Required: channels
inbound_channel = client.inbound_channels.update(
channels=7,
)
print(inbound_channel.data)
Returns: channels (integer), record_type (string)
Retrieve a list of all phone numbers using Channel Billing, grouped by Zone.
GET /list
response = client.list.retrieve_all()
print(response.data)
Returns: number_of_channels (integer), numbers (array[object]), zone_id (string), zone_name (string)
Retrieve a list of phone numbers using Channel Billing for a specific Zone.
GET /list/{channel_zone_id}
response = client.list.retrieve_by_zone(
"channel_zone_id",
)
print(response.data)
Returns: number_of_channels (integer), numbers (array[object]), zone_id (string), zone_name (string)
Returns the voicemail settings for a phone number
GET /phone_numbers/{phone_number_id}/voicemail
voicemail = client.phone_numbers.voicemail.retrieve(
"123455678900",
)
print(voicemail.data)
Returns: enabled (boolean), pin (string)
Create voicemail settings for a phone number
POST /phone_numbers/{phone_number_id}/voicemail
Optional: enabled (boolean), pin (string)
voicemail = client.phone_numbers.voicemail.create(
phone_number_id="123455678900",
)
print(voicemail.data)
Returns: enabled (boolean), pin (string)
Update voicemail settings for a phone number
PATCH /phone_numbers/{phone_number_id}/voicemail
Optional: enabled (boolean), pin (string)
voicemail = client.phone_numbers.voicemail.update(
phone_number_id="123455678900",
)
print(voicemail.data)
Returns: enabled (boolean), pin (string)