Backbone Solutions AG - Sipcall SIP Trunk
On this topic
About Backbone Solutions AG
Sipcall SIP Trunk from Backbone Solutions is a reliable and affordable service providing up to 60% cost savings on telco bills. With around 20 years of experience and over 40,000 customers, Backbone’s high quality services go hand in hand with 3CX’s innovative software PBX for an unbeatable VoIP solution.
Reference Web Address: Sipcall
Before configuring the SIP trunk it is required to go through the following checklist and make changes where necessary:
- NAT (when used) created to 3CX
- Firewall Checker passed
- Firewall SIP ALG checked and if present disabled
Further setup information can be found in our Academy: 3CX Academy Basic Course
Some providers gained support and compatibility with 3CX on a specific product version. It is advisable to always run the latest version of 3CX to ensure ongoing compatibility.
Minimum 3CX Version: 3CX Phone System 15.5
Below is a short overview of the provider's capabilities and services and whether they’re supported or not:
- CLNS (Clip No Screening): Yes
- Catch All Routing: Yes
- Fax in T38: Yes
- CLIR (Number Suppression): Yes
- DTMF via RFC 2833: Yes
- Codec Order: G711U, G711A, GSM
- NAT Support: Yes
Configuring the Trunk with 3CX
The general instructions outlining how to add a new SIP Trunk to your 3CX installation can be found here.
Adding the Trunk
In the 3CX Management Console go to “SIP Trunks” and press the “Add SIP Trunk” button. Here select “CH” from the country drop-down and then select “Backbone Solutions AG - Sipcall”. Then in the ”Main Trunk No” field enter one DID number that is associated with your Sipcall SIP Trunk as given to you by your provider.
Note that the ”Main Trunk No” must be written in the International number format, e.g. 4144xxxxxxx. Once you have filled this in, press OK.
This will take you to the SIP Trunk settings. Now you will need the following information that will have been provided to you by your Provider:
- The SIP Server you should connect to
- VoIP Username
- VoIP Password
Once you have the above, fill in the information in the following fields:
- Registrar ← SIP Server
- Authentication ID ← VoIP Username
- Authentication Password ← VoIP Password
After doing this, scroll to the top of the page and press OK to create the SIP Trunk in 3CX. At this point your Sipcall SIP Trunk should be registered.
Adding Additional DIDs
To associate all other DIDs/Numbers you have in your Sipcall account with 3CX, go to the Management Console → SIP Trunks, double-click on your Sipcall SIP Trunk and go to the “DIDs” tab.
Here you should already see 1 entry that is the Main Trunk number you have set. Add all other DIDs/Numbers you have to the list in an international number format, e.g. 4144xxxxxxx, then press OK once you have finished.
Creating Inbound Rules
Now that you have associated all your DIDs/Number with your SIP Trunk in 3CX, you can create Inbound Rules to set where calls will be routed when those numbers are called. Instructions on how to create Inbound Rules can be found here.
When configuring Sipcall SIP Trunks in 3CX, all numbers should be entered in a international number format, e.g. 4144xxxxxxx, otherwise calls might be rejected.
Outbound Caller ID
Sipcall SIP Trunks support Clip No Screening which means you can present any number you want when calling outbound. For this to work correctly however, in all 3CX fields where the Outbound Caller ID can be set, the number must be entered in the International number format (e.g. 4144xxxxxxx).
There are no special instructions regarding Outbound Rules that are required, numbers can be dialed in any valid for the number format.
More information about how to create Outbound Rules and how they work can be found here.