Astra Dial connects to your telephony provider through SIP (Session Initiation Protocol) trunks. This guide walks you through configuring SIP trunks, DID numbers, extensions, and call queues.
Prerequisites
Before setting up SIP, you need:
- An active Astra Dial account with KYC approved
- SIP trunk credentials from your telephony provider (IP/hostname, port, username, password)
- DID numbers assigned by your provider
Contact your Astra Dial account manager if you need help sourcing a SIP trunk provider.
Connecting your SIP trunk
Navigate to telephony settings
Open your Astra Dial dashboard and navigate to the telephony or PBX configuration section.
Add a new trunk
Click Add New and provide the following details:| Field | Description |
|---|
| Trunk name | A descriptive name for this connection |
| Host/IP | Your provider’s SIP server address |
| Port | SIP port (default: 5060) |
| Username | Authentication username from your provider |
| Password | Authentication password |
| Transport | Protocol: UDP, TCP, or TLS |
Save and verify
Save the trunk configuration. The status badge shows whether the trunk is active or inactive.
Use TLS transport for encrypted SIP signaling when your provider supports it.
Configuring DID numbers
DID (Direct Inward Dialing) numbers are your inbound phone numbers. Each DID routes incoming calls to a specific destination.
Adding a DID
Provide the following when creating a DID:
| Field | Description |
|---|
| Phone number | The DID number from your provider |
| Description | Label for this number (e.g., “Sales line”) |
| SIP trunk | Select the trunk this number belongs to |
| Routing type | Where to route incoming calls |
| Routing destination | The specific extension, queue, or bot |
| Call recording | Enable or disable recording for this number |
Routing types
| Type | Description |
|---|
| Extension | Route to a specific user extension |
| Queue | Route to a call queue for distribution |
| IVR | Route to an interactive voice response menu |
| AI agent | Route to an Astra Dial voice bot |
Setting up extensions
Extensions represent individual users or endpoints in your phone system.
| Field | Description |
|---|
| Extension number | A numeric identifier (e.g., 1001) |
| Full name | The user’s name |
| Username | Login username |
| Email | User’s email address |
| Password | Login password |
| Role | Permission level (see below) |
Roles
| Role | Description |
|---|
| Admin | Full system access |
| Supervisor | Team management and monitoring |
| Agent | Handle calls and view own data |
| User | Basic access |
Setting up call queues
Call queues distribute incoming calls across a group of agents.
| Field | Description |
|---|
| Queue name | A descriptive name (e.g., “Sales queue”) |
| Queue number | Numeric identifier (e.g., 5000) |
| Strategy | How calls are distributed to agents |
| Timeout | Seconds before the call moves to the next agent (default: 30) |
Distribution strategies
| Strategy | Description |
|---|
| Ring all | Ring all available agents at once |
| Least recent | Ring the agent who has been idle the longest |
| Fewest calls | Ring the agent with the fewest completed calls |
| Random | Ring a random available agent |
| Round robin | Cycle through agents in order (with memory) |
| Linear | Ring agents in a fixed order |
Deploying configuration
After making changes to trunks, DIDs, extensions, or queues, deploy the configuration to apply your changes to the live system.
Deploying configuration applies changes immediately. Verify your settings before deploying to avoid call routing disruptions.
Support
Contact your Astra Dial account manager or reach out to [email protected] for assistance with SIP setup. 
