Telnyx Numbers Services Go

---
name: telnyx-numbers-services-go
description: >-
  Configure voicemail, voice channels, and emergency (E911) services for your
  phone numbers. This skill provides Go SDK examples.
metadata:
  author: telnyx
  product: numbers-services
  language: go
  generated_by: telnyx-openapi-pipeline
---

<!-- Auto-generated from Telnyx OpenAPI specs. Do not edit. -->

# Telnyx Numbers Services - Go

## Installation

```bash
go get github.com/team-telnyx/telnyx-go
```

## Setup

```go
import (
  "context"
  "fmt"
  "os"

  "github.com/team-telnyx/telnyx-go"
  "github.com/team-telnyx/telnyx-go/option"
)

client := telnyx.NewClient(
  option.WithAPIKey(os.Getenv("TELNYX_API_KEY")),
)
```

All examples below assume `client` is already initialized as shown above.

## Error Handling

All API calls can fail with network errors, rate limits (429), validation errors (422),
or authentication errors (401). Always handle errors in production code:

```go
import "errors"

result, err := client.Messages.Send(ctx, params)
if err != nil {
  var apiErr *telnyx.Error
  if errors.As(err, &apiErr) {
    switch apiErr.StatusCode {
    case 422:
      fmt.Println("Validation error — check required fields and formats")
    case 429:
      // Rate limited — wait and retry with exponential backoff
      fmt.Println("Rate limited, retrying...")
    default:
      fmt.Printf("API error %d: %s\n", apiErr.StatusCode, apiErr.Error())
    }
  } else {
    fmt.Println("Network error — check connectivity and retry")
  }
}
```

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).

## Important Notes

- **Pagination:** Use `ListAutoPaging()` for automatic iteration: `iter := client.Resource.ListAutoPaging(ctx, params); for iter.Next() { item := iter.Current() }`.

## List your voice channels for non-US zones

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`

```go
	page, err := client.ChannelZones.List(context.Background(), telnyx.ChannelZoneListParams{})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", page)
```

Returns: `channels` (int64), `countries` (array[string]), `created_at` (string), `id` (string), `name` (string), `record_type` (enum: channel_zone), `updated_at` (string)

## Update voice channels for non-US Zones

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`

```go
	channelZone, err := client.ChannelZones.Update(
		context.Background(),
		"channel_zone_id",
		telnyx.ChannelZoneUpdateParams{
			Channels: 0,
		},
	)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", channelZone.ID)
```

Returns: `channels` (int64), `countries` (array[string]), `created_at` (string), `id` (string), `name` (string), `record_type` (enum: channel_zone), `updated_at` (string)

## List dynamic emergency addresses

Returns the dynamic emergency addresses according to filters

`GET /dynamic_emergency_addresses`

```go
	page, err := client.DynamicEmergencyAddresses.List(context.Background(), telnyx.DynamicEmergencyAddressListParams{})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", page)
```

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)

## Create a dynamic emergency address.

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)

```go
	dynamicEmergencyAddress, err := client.DynamicEmergencyAddresses.New(context.Background(), telnyx.DynamicEmergencyAddressNewParams{
		DynamicEmergencyAddress: telnyx.DynamicEmergencyAddressParam{
			AdministrativeArea: "TX",
			CountryCode:        telnyx.DynamicEmergencyAddressCountryCodeUs,
			HouseNumber:        "600",
			Locality:           "Austin",
			PostalCode:         "78701",
			StreetName:         "Congress",
		},
	})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", dynamicEmergencyAddress.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)

## Get a dynamic emergency address

Returns the dynamic emergency address based on the ID provided

`GET /dynamic_emergency_addresses/{id}`

```go
	dynamicEmergencyAddress, err := client.DynamicEmergencyAddresses.Get(context.Background(), "182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", dynamicEmergencyAddress.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)

## Delete a dynamic emergency address

Deletes the dynamic emergency address based on the ID provided

`DELETE /dynamic_emergency_addresses/{id}`

```go
	dynamicEmergencyAddress, err := client.DynamicEmergencyAddresses.Delete(context.Background(), "182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", dynamicEmergencyAddress.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)

## List dynamic emergency endpoints

Returns the dynamic emergency endpoints according to filters

`GET /dynamic_emergency_endpoints`

```go
	page, err := client.DynamicEmergencyEndpoints.List(context.Background(), telnyx.DynamicEmergencyEndpointListParams{})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", page)
```

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)

## Create a dynamic emergency endpoint.

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)

```go
	dynamicEmergencyEndpoint, err := client.DynamicEmergencyEndpoints.New(context.Background(), telnyx.DynamicEmergencyEndpointNewParams{
		DynamicEmergencyEndpoint: telnyx.DynamicEmergencyEndpointParam{
			CallbackNumber:            "+13125550000",
			CallerName:                "Jane Doe Desk Phone",
			DynamicEmergencyAddressID: "0ccc7b54-4df3-4bca-a65a-3da1ecc777f0",
		},
	})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", dynamicEmergencyEndpoint.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)

## Get a dynamic emergency endpoint

Returns the dynamic emergency endpoint based on the ID provided

`GET /dynamic_emergency_endpoints/{id}`

```go
	dynamicEmergencyEndpoint, err := client.DynamicEmergencyEndpoints.Get(context.Background(), "182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", dynamicEmergencyEndpoint.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)

## Delete a dynamic emergency endpoint

Deletes the dynamic emergency endpoint based on the ID provided

`DELETE /dynamic_emergency_endpoints/{id}`

```go
	dynamicEmergencyEndpoint, err := client.DynamicEmergencyEndpoints.Delete(context.Background(), "182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", dynamicEmergencyEndpoint.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)

## List your voice channels for US Zone

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`

```go
	inboundChannels, err := client.InboundChannels.List(context.Background())
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", inboundChannels.Data)
```

Returns: `channels` (integer), `record_type` (string)

## Update voice channels for US Zone

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`

```go
	inboundChannel, err := client.InboundChannels.Update(context.Background(), telnyx.InboundChannelUpdateParams{
		Channels: 7,
	})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", inboundChannel.Data)
```

Returns: `channels` (integer), `record_type` (string)

## List All Numbers using Channel Billing

Retrieve a list of all phone numbers using Channel Billing, grouped by Zone.

`GET /list`

```go
	response, err := client.List.GetAll(context.Background())
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", response.Data)
```

Returns: `number_of_channels` (integer), `numbers` (array[object]), `zone_id` (string), `zone_name` (string)

## List Numbers using Channel Billing for a specific Zone

Retrieve a list of phone numbers using Channel Billing for a specific Zone.

`GET /list/{channel_zone_id}`

```go
	response, err := client.List.GetByZone(context.Background(), "channel_zone_id")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", response.Data)
```

Returns: `number_of_channels` (integer), `numbers` (array[object]), `zone_id` (string), `zone_name` (string)

## Get voicemail

Returns the voicemail settings for a phone number

`GET /phone_numbers/{phone_number_id}/voicemail`

```go
	voicemail, err := client.PhoneNumbers.Voicemail.Get(context.Background(), "123455678900")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", voicemail.Data)
```

Returns: `enabled` (boolean), `pin` (string)

## Create voicemail

Create voicemail settings for a phone number

`POST /phone_numbers/{phone_number_id}/voicemail`

Optional: `enabled` (boolean), `pin` (string)

```go
	voicemail, err := client.PhoneNumbers.Voicemail.New(
		context.Background(),
		"123455678900",
		telnyx.PhoneNumberVoicemailNewParams{
			VoicemailRequest: telnyx.VoicemailRequestParam{},
		},
	)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", voicemail.Data)
```

Returns: `enabled` (boolean), `pin` (string)

## Update voicemail

Update voicemail settings for a phone number

`PATCH /phone_numbers/{phone_number_id}/voicemail`

Optional: `enabled` (boolean), `pin` (string)

```go
	voicemail, err := client.PhoneNumbers.Voicemail.Update(
		context.Background(),
		"123455678900",
		telnyx.PhoneNumberVoicemailUpdateParams{
			VoicemailRequest: telnyx.VoicemailRequestParam{},
		},
	)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", voicemail.Data)
```

Returns: `enabled` (boolean), `pin` (string)