How to configure a SIP trunk on a Grandstream PBX

Configuring the SIP trunk on Grandstream is not installing the phone. It is putting the operator line on the system, so calls leave and come in. The Fanvil extension sits on the desk. Grandstream is the box. The trunk is the Movitel, Vodacom or Tmcel account on that box.

Palo Security supplies Grandstream systems and Fanvil phones. Trunk configuration is part of the quote when the request includes the system. What a SIP trunk is, and the operators in Mozambique, sit in other articles. This one closes what to do on the Grandstream.

What you need first

• The Grandstream in the office, with access to the configuration page on the site network.
• Stable internet to the system. Without that network, the trunk does not register with the operator.
• The SIP account details from the operator: server, username, password and the public numbers. Palo Security does not invent that account.

Steps on the Grandstream

1. Open the Grandstream page in the office, with the system administration account.
2. Create a new SIP trunk and fill in the server, username and password the operator delivered.
3. Save and confirm the trunk is registered. If it did not register, the line is not on the system yet: check the details with the operator, do not invent another server.
4. Set where inbound calls go: extension, group or attendant. Without this route, the public number rings and nobody answers in the office.
5. Set how extensions go outside: the prefix or rule that sends the call through the trunk. Without this route, the Fanvil dials internally and does not leave.
6. Test one inbound call on the company number and one outbound call from an extension.

What not to mix

• Grandstream is not Yeastar. The operator account can be the same; the system page is not.
• The trunk is not the extension. Creating Fanvil phones does not open the line outside.
• Palo Security does not replace Movitel, Vodacom or Tmcel. It connects the Grandstream to the line the operator delivers.

When the line fails

If the trunk does not register, the problem is in the details, the internet to the box, or the operator account — not in an extension. If it registers and calls do not come in, the inbound route is missing. If they do not go out, the outbound route is missing. We do not invent the field list for the Grandstream version in this article: the model and firmware close on site.

What to say in the request

1. Whether the system is already a Grandstream on site, or the request includes a new box.
2. Whether the line is Movitel, Vodacom or Tmcel, and whether the SIP account details already exist.
3. How many Fanvil extensions and whether Palo Security configures the trunk with the system.

We do not invent the operator account. The Grandstream, the phones and the trunk close together. Tell us the office and we prepare the quote.