Setting up a SIP trunk

Once you've signed up for your Dial 9 SIP trunk service, you'll need to login to our web interface - Dial 9 Connect - and set up incoming and outgoing call routes.

Create a trunk

1. Go to Trunking > Trunks and click Create a new trunk.
2. Enter a Name for the trunk, such as the office or site the PBX is in.
3. Under Authentication, choose how your PBX connects:
   • IP address: calls arrive from a fixed public IP address. Enter your PBX's public IP address in the IP Address field.
   • Username and password: your PBX registers with credentials that Dial 9 Connect generates. Choose this if your PBX doesn't have a static IP address.
4. Click Save.

You can't change a trunk's authentication method or IP address after it's created. To switch, create a new trunk and move your numbers to it.

Registration details

When you save a username and password trunk, its page shows the details your PBX needs to register. Each one has a copy button.

• Username: starts with your phone system's prefix, for example harbourit-r7tw3hbn. Enter the whole username, prefix included.
• Password: shown for 24 hours after it's generated, then hidden. To get a new one, click the regenerate button next to it. The old password stops working straight away, so update your PBX as soon as you regenerate.
• SIP Hostname: sip.dial9.co.uk, the server your PBX registers with and sends calls to.

Incoming calls

To send calls for a number to your PBX:

1. Go to Numbers and edit the number.
2. Under Destination, choose Send to a trunk, then select your trunk.
3. Click Save.

Dial 9 sends the call to your PBX with the dialled number and the caller's number in E.164 format, without the +, for example 441202912444. The trunk's CLI format setting, under Incoming calls, controls this. E.164 is currently the only option.

Your PBX needs an inbound route that matches the number in this format. PBX configuration lists exactly what each call carries.

Outgoing calls

Once the trunk exists, your PBX can make outgoing calls through it.

• IP address trunks: send calls to sip.dial9.co.uk from the IP address you entered. No registration or password is needed.
• Username and password trunks: register with sip.dial9.co.uk using the trunk's username and password, and send calls there with the same credentials.

Checking your trunk is connected

Trunking > Trunks lists your trunks, how each one authenticates, and a status dot. Green means the trunk is online.

• An IP address trunk is online when your PBX answers Dial 9's connection checks, which are sent every minute.
• A username and password trunk is online while your PBX is registered.

SIP servers and SIP URLs

Before trunks could receive calls, incoming calls were set up with SIP servers and SIP URLs. These are now marked Deprecated in the menu. Numbers that use them keep working, but we recommend moving them to Send to a trunk.