Cbeyond
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Information about the Provider
From their web page (see http://www.cbeyond.net): "Cbeyond is the voice and broadband Internet provider built exclusively to serve small businesses. We work exclusively with this growing entrepreneurial class of customers and it shows in everything we do - from our customized packages to our unique customer support. Our local, long distance and Internet packages, anytime account management and industry-first VoIP platform give small businesses the communication tools that big businesses enjoy - at an affordable price."
How to set up a trunk
Cbeyond installs a router at the customer prem which is fully SIP aware and performs the ALG functions in the NATter. That means that you can operate your PBX just with a private IP address.
You need to create a SIP trunk for the provider. Do this by loggin in as domain administrator and select the trunk tab. You will see a form for creating a new trunk. Select registration mode:
After the trunk has been created, click on the edit button. This will lead you to a new dialog, where you can fill in the detail data for the trunk:
In order to get a cbeyond trunk working, you need to fill in the following fields:
- The "Display Name" and "Account" are the numbers provided by Cbeyond. This is usually the DID number which has been assigned for you.
- As "Domain" and "Outbound Proxy" use the specified name by the provider. Typically that name looks like "sipconnect.atl0.cbeyond.net" (if you are using the service in Atlanta), "sipconnect.dal0.cbeyond.net" (Dallas), "sipconnect.den0.cbeyond.net" (Denver), "sipconnect.hou0.cbeyond.net" (Houston), "sipconnect.chi0.cbeyond.net" (Chicago), "sipconnect.sdg0.cbeyond.net" (San Diego) or "sipconnect.lax0.cbeyond.net" (Los Angeles). But those names may change, please verify with the information provided by the provider. The name in the screenshot is just an example.
- The "Username" is the same as the "Account".
- The "Password" is the password as specified by Cbeyond.
- If you want to use the "Privacy Indication", use RFC3325.
- The other settings should stay empty. Please do not use a "STUN server" and don't set the "Keepalive Time", as this will have a negative impact on the line performance.
- Don't forget to assign a destination which is being called when the call hits the trunk. Fill in an existing extension, hunt group, auto attendent or hunt group into the "Extension" field.
After setting up the trunk, make sure that at least one dialplan uses the trunk. In order to do that, click on the dial plan tab, and select a dial plan. If you don't have a dial plan yet, create one. Then edit the dial plan and make sure that you have selected the Cbeyond trunk in the dial plan:
After setting up the dial plan, don't forget to select the default dial plan of the domain. This is done in the domain settings:
Check if everything is ok
In the "Show List" of the trunks section, you should see a message that the registration is ok (see the below picture). You should see a message with the code 200 and the explanation message like "Ok". The PBX indicates when it would next time refresh the registration.
If you place an outbound call, the call should go through properly. You should see the DID number that has been assigned by Cbeyond.
If you call the DID number, the specified number should ring. You should see the Caller-ID of the station from where you are calling.
Solving Problems
There is a generic FAQ available on how to troubleshoot trunks: Troubleshooting SIP Trunk Problems will give you some points that you can check in order to get the trunk working properly.
