Extensions not registering is a problem that frequently arises while installing Isabel or Asterisk. You cannot register your VOIP phone with your IP PBX server or make inter extension calls. Most likely, SELinux being activated is the offending factor. You would have to turn it off. You may examine the devices/servers connected to your IP […]

IVR choices do not function when keys are pressed, or, more precisely, DTMF signaling is not functional on your incoming calls. Once callers reach your main number, they cannot reach an extension they dial. They press the key(s) to reach an extension, but it reaches nowhere. When VOIP systems are put up, this problem is […]