When creating customized audio files for the PBX, it is necessary to check whether the software used (such as Adobe-Aution) queues text information files (typically in XML format) that are not audio samples. This information is still read by the PBX and generates an annoying noise (loud hiss) when the playback has finished. So if […]
The VOIspeed PBX supports the alert-info method provided by the SIP standard to indicate to the phones whether the call they are receiving comes from an extension or an external number. When the PBX sends a call to the phones, it inserts the alert-info parameter in the INVITE header with the following format: When the […]
In the event that there are remote IP phones that connect to the switchboard from outside the network, the poor quality of the ADSL line can affect the quality of the voice. For this reason it is necessary to set the phone to use G.729 (compressed) codec as a priority and G.711 as secondary. If […]
The problem can occur when the PBX has not been installed by a user with administrator rights on the machine. The message “PBX service not installed” occurs when we try to open the PBX web page by positioning itself over the PBX GUI icon in the system tray. To solve this problem, you need to […]
Polycom and Yealink phones, but most IP terminals in general, are factory configured to reject incoming calls if they remain ringing for more than 60 seconds. In the PBX log the corresponding SIP message sent by Polycom is a 603 DECLINE, while the Yealinks reject the call with a 486 Busy). If you want to […]
If the file transfer process started on a VOIspeed 6 platform GUI does not start (the transfer status remains at 0%) it could be a problem with the IP address configuration of the client machine. If the machine has more than one IP address on different classes (subnets), the sockets used by the GUI cannot […]
The VOIspeed executable programs (the PBX and the GUI) are developed for x86 platforms. Windows RT, on the other hand, can be installed on ARM platforms, so it is not possible to install VOIspeed on this operating system. If necessary, on PCs / tablets with Windows RT system it is possible to use the HTML5 […]
When you receive the service from alternative telephone operators, who use Patton routers, making a call, sometimes the free tone you hear when sending an outgoing call can be perceived as disturbed or completely absent. To overcome this problem, the telephone operator must enable the Early Proceeding function on his router (Patton). This way the […]
Windows Azure is a platform developed by Microsoft for the cloud that allows you to create applications and virtual machines. In the latter case, when creating a virtual machine with a Windows operating system, there is a limit on the opening of UDP ports which can cause problems with VoIP operators. The typical problem is […]
