Voice

Voice services, call routing, SIP Trunking, and phone system configuration

67 articles

General

6 articles
Telstra Scam Call Changes

Understand how Telstra's IVR scam-call screening may affect calls using Telstra CLI, and what it means for whitelisting and roaming.

SIP Response Codes

A handy reference for decoding SIP response codes when troubleshooting call issues.

Rate Checker

Check the exact per-minute rate for any number before you dial, using the same tool that powers your bill.

Connecting to Atomic via SIP

Get the exact domain and IP details needed to connect your switch or device to Atomic for seamless call routing.

MOLI Codes

See where your mobile callers are calling from with location codes delivered right in your SIP headers.

Presenting Original Caller ID on Diverted (Call-Forwarded) Calls

Configure your SIP trunk so forwarded calls show the real original caller, not your own number.

SIP Trunks

14 articles
CLI/CLD Translation

Customize how caller and called numbers are formatted, converted, or blocked on your SIP Trunk.

Voicemail

Turn on Voicemail for your SIP Trunk and pick up missed calls by phone or email.

Adding / Removing Channels

Easily scale your SIP Trunk call capacity up or down right from the Atomic portal.

Create a Voice Service

Set up a SIP Trunk, Teams Direct Routing, or Hosted Voice service in just a few guided steps.

Call Forwarding

Redirect incoming SIP Trunk calls to another number automatically when you're busy, unavailable, or offline.

Managing Media Relay

Control how your call audio is routed to help with NAT and network setup.

Anonymous / Private Calling

Make private calls work reliably by setting the correct SIP headers on your trunk.

SIP End Point

Connect SIP phones and ATAs easily using a simple username and password login.

Ring Back Tone Generation

Turn on automatic ring back tones so callers always hear ringing, even if their device can't generate one.

Connections for Services

Connect your SIP Trunk your way—set up endpoints, outgoing trunks, or incoming trunks with backup IPs in minutes.

CDR - Result Codes

Quickly decode negative CDR result codes to see exactly why a call failed.

Connecting to Yeastar Cloud PBX

Step-by-step setup for linking your Yeastar Cloud PBX to SIP Trunks, from trunk creation to inbound and outbound call routing.

Advanced Features

Get the technical details on advanced SIP Trunk features like PRACK and Caller ID identity headers.

Voice Service Configuration: Walkthrough

Follow the full setup path to get calls routing and numbers receiving on your voice service, from connections to DID assignment.

Hosted Voice

8 articles
What is Hosted Voice

Offer your customers a fully branded cloud PBX with easy call routing, voicemail, and queueing built in.

Get Started with Hosted Voice

Get your Hosted Voice service up and running with a branded portal for you and your customers.

Setting up a Hosted Voice Account

Spin up a fully branded Hosted Voice account and PBX portal in just a few configuration steps.

Setup Custom SIP Domain

Brand your own SIP domain so customers connect their phones with your company's name, not ours.

Channels on Hosted Voice

See how your Hosted Voice channel capacity scales automatically with your licensed users.

Timezone Management

Set the right timezone for each account so your time-based call rules always trigger on schedule.

2-way SMS

Turn on two-way texting for your Hosted Voice numbers and let users send and receive SMS right from their extension.

Hosted Voice Country Setup

Choose your country during Hosted Voice setup so your timezone and dial plan are configured correctly from the start.

MS Teams Direct Routing

12 articles
Overview

Connect your Microsoft 365 Tenant to get Teams calling up and running with Atomic.

Requirements

Check what licenses and admin access you need before connecting Microsoft Teams to your phone system.

1. Create Service Plan

Set up your Microsoft Teams Service Plan and grab your Teams Domain name to connect calling to Office 365.

2. Adding the Domain

Connect your Teams domain to Microsoft 365 with a step-by-step guide to DNS verification and portal setup.

3. Activating the Domain

Good news—this domain activation step is no longer needed by Microsoft.

4. Connect Teams to Atomic

Connect your Microsoft Teams tenant to Atomic and get calling up and running in minutes.

5. Add Users to Teams

Assign phone numbers and enable calling for your team members in Microsoft Teams in just a few clicks.

6. Call Routing

Route all your Microsoft Teams calls through Atomic with a simple step-by-step voice routing setup.

7. Dial Plans

Set up dial plans in Microsoft Teams so numbers dial correctly every time.

8. Calling Policies

Get the exact Microsoft Teams calling policy settings needed to keep your calls connecting smoothly.

9. Caller ID Policies

Choose whether your number or a private ID shows up when you call from Microsoft Teams.

10. Auto Attendant / Call Queue

Route calls smartly by setting up Auto Attendants and Call Queues with dedicated numbers in Teams.

DID Numbers

11 articles
Ordering a Number

Find and order the perfect phone number, request number blocks, and assign them to your service in just a few clicks.

Porting Cut Over Process

Know exactly what happens during number port cutover so your calls keep flowing without interruption.

Inbound and Outbound Number Formats

Choose whether your calls display in E.164 or domestic number format, for both incoming and outgoing calls.

Simple Answer Point

Forward incoming calls on your number straight to another phone, no trunk setup required.

Port Your Telephone Number to a New Provider (Port Out)

Switch providers smoothly by learning what's needed to port your number away from Atomic.

Porting Authority Form

Get, upload, or download the Porting Authority Form you need to transfer phone numbers smoothly.

Forwarding a DID to an Extension using Asterisk

Route your DID straight to an Asterisk extension with a simple config file edit.

International DID Porting

Bring your US or Canada phone numbers over to Atom with a simple email request.

Porting Numbers

Move your existing phone numbers over with a guided porting process for Australian and New Zealand DIDs.

Porting a Simple Number @CAT-A

Move your existing simple phone number over smoothly in about 5-7 business days.

Porting a Complex Number @CAT-C

Understand what to expect when porting a complex number block, from submission to cutover completion.

Number Inventory

2 articles
Manage DID Settings

Update how your numbers connect, format, and display—one at a time or in bulk across your account.

Moving DID Numbers

Reassign a phone number to a new service or connection in just a few clicks, with changes live instantly.

Integrations

2 articles
Genesys

Connect Genesys Cloud to your SIP Trunks and enable 2-way SMS with step-by-step BYOC setup.

Connecting an External Voice Platform to Atomic

Atomic can provide phone numbers and calling services for many external PBX, voice AI, contact-centre and communications platforms.

FAQ

12 articles
SIP Profile

Find the right SIP gateway settings—domestic or international—for smooth, reliable call connectivity.

I can't dial out using when using the 02, 03, 04, 07,08 and 13

Fix dial-out issues on 02, 03, 04, 07, 08 and 13 numbers by switching your SIP Trunk to Domestic dial format.

Why is my CLI appearing with a 99900xxxxxxxx number?

Stop calls showing a generic 9990 number—set your own caller ID for SIP Trunk calls in a few clicks.

Dialling a Local Number

Configure local dialling rules so calls to nearby numbers connect correctly, state by state.

Sending & Receiving SMS (iOS)

Get your text messages pushed straight to your iPhone and reply on the go, no coding required.

I can’t Assign a number to a Connection

Fix number assignment issues by making sure your SIP, Trunk, Teams, or Hosted Voice connection is fully configured first.

How Does Channels Work?

See how call channels work and why Call Forwarding needs at least two available.

Caller ID Showing Incorrect Business Name

See why your business name may show incorrectly on caller ID and how to get it corrected with Hiya, Truecaller, or Whitepages.

Why Your Call May Reach an Automated IVR or Not Ring on iPhone Devices

Find out why some calls to iPhones get screened by Siri or sent straight to voicemail—and how to get through.

What is SIP ALG and why you need to disable it?

Disable SIP ALG on your router to stop dropped calls, one-way audio, and other VoIP glitches.

P-Asserted-Identity (PAI)

See how caller ID (PAI) headers are handled on your calls and how to format numbers for the best carrier compatibility.

How Outbound Calling Works — SIP Endpoint vs SIP Outgoing Trunk

Connect your PBX for outbound calling with step-by-step setup for SIP Endpoint or SIP Outgoing Trunk connections.