Introduction: This document describes solutions to some common digital signal processor (DSP) related issues and ways to determine if the issue is hardware related or not. DSP is a part of the PVDM card. So, let's start by defining a PVDM. A Packet...

                                             Troubleshooting DTMF in MGCP and PRI WHAT IS DTMF? DTMF (Dual Tone Multiple Frequency ) is used to send to signals for button presses on telephones. The data is typically sent over voice channels and so in...

PRI (PRIMARY RATE INTERFACE) Troubleshooting Before I start with main content on how to troubleshoot PRI, let’s go through a small introduction of PRI. What is PRI? A PRI – or Primary Rate Interface – is an end-to-end, digital telecommunications con...

                       Troubleshoot Audio Issues and FXO Disconnect Issue Using PCM   There are cases/situations where we have to configure custome CPTONE to resolve FXO disconnect issue. Following are situations which can arise due to FXO disconnect...