Common Analog Trunk issues in Grandstream UCM63XX/62XX/6510
Description This article describes common Analog or PSTN trunk issues that happen in Grandstream PBX UCM63XX/62XX/6510. A list of suggestions is stated to deal with different scenarios in the customer’s setup. Issue 1: Noise or Echo Issue 2: Caller ID not showing or Undetected 0000 Issue 3: FXO port status is not reflected correctly in … Read more