Common Analog Trunk issues in Grandstream UCM63XX/62XX/6510
Description This article outlines common Analog and PSTN trunk issues encountered with Grandstream IP PBX UCM63XX/62XX/6510. It provides a list of suggestions to address various scenarios in customer setups. Issue 1: Noise or Echo Issue 2: Caller ID Not Showing or Displayed as 0000 Issue 3: FXO Port Status Not Displayed Correctly in Web Interface … Read more