This article describes the steps necessary for configuring the Sonus SBC 1000 to route incoming PSTN calls to an FXS port. In the example below, ISDN/PSTN calls arriving with four digits are routed to an FXS port.
The process comprises four overall steps:
Verify that your Sonus SBC 1000 is loaded with the correct boot image version and that your Sonus SBC 1000 base software version is at least version 2.0.0, build 108.
The FXS card does not function with older versions of the Sonus SBC 1000 firmware/software. Should you need to upgrade your Sonus SBC 1000 unit, you must follow the Sonus SBC 1000/2000 Upgrade Guide.
The Sonus SBC 1000 system must have the necessary licenses to make calls. In addition to CAS and DSP channels, and depending upon the types of calls, the Transcoding and SIP calls licenses may also be necessary as shown below:
Current Licenses
Verify that the state for the Telco Module(s) indicated in the Cards/Modules Status pane is Activated.
Cards/Modules Status
Verify that the Admin State and Service Status for each port indicates Up as shown below.
Port Status
FXS not Activated and Up? Did you upgrade the boot image and Sonus SBC 1000 base software versions as outlined above.
Verify that your FXS devices are connected to the ports you plan to configure.
Later in this article, you will create a CAS Signaling Group and assign channels and ports, they must match the physical ports to which the FXS devices are connected. See the figure below.
Ports
The FXS Ports and Channels in a CAS Signaling Group | The FXS Monitoring View |
---|---|
Create an FXS Signaling Profile for CAS.
Create FXS Signaling Profile
Create a CAS Signaling Group.
Make sure to set the Channel Hunting to Own Number, otherwise the first free channel will answer every call (regardless of any other configuration settings).
Create CAS Signaling Group
Create an Assigned Channel and apply the desired phone number to the corresponding FXS port.
You may add all of the port/number combinations for FXS in a single Signaling Group.
Create Assigned Channel
Verify that the CAS Signaling group is configured as shown below.
Verify Configuration of CAS Signaling Group
Are you certain your boot image and Sonus SBC 1000/2000 software versions are up to date as noted in the Prerequisites?
In order to route incoming ISDN calls with 4 digits to FXS ports, you must create a Transformation table whose entry prepends +1510574
. The resulting called number, +1510574xxxx, then matches the Channel Phone Numbers configured in the previous section.
Create a Transformation Table for the FXS calls called PSTN to FXS:
Create Transformation Table
Create a Transformation entry to that table called PSTN to FXS Transformation.
Create Transformation Table Entry
Add a call route table called From ISDN to SIP.
Add Call Route Table
Add a call route entry to that table which employs the transformation created in the previous step called PSTN to FXS.
Create Call Routing Entry
Resequence the FXS call route.
Resequence FXS Call Route
Calls should now work from ISDN to FXS.
Try reseating the DSP cards and telephony feature cards. Also, re-verify your licenses.
The Sonus SBC 1000 logging trace produced was saved when making the FXS call - you can download it here.