Check the following:

  • Weak wireless signal: Check the bars on your device to verify that you have a strong Wi-Fi connection. If your signal is weak, consider moving the call to the mobile data network.
  • Mobile data network connectivity: If you are using Cisco Jabber over your mobile data network, your connectivity and call quality can vary considerably due to the signal coverage. If the issues persist, consider moving the call to other networks or find a place where can provide a strong wireless network connection.
  • Bluetooth and Wi-Fi interference: Even on well-designed Wi-Fi networks, you can experience interference from other devices (including your Bluetooth headset), which can cause dropped calls or poor audio quality on Cisco Jabber. Turn off the Bluetooth headset to see if that resolves the issue.
  • Handoff between Wi-Fi access points: As you move around your workplace, your Wi-Fi connection may transfer between different Wi-Fi access points. If you are on a call during one of these transitions, you might hear a few seconds of garbled audio or silence. This problem resolves itself after the handoff is completed.
  • Lost connection to Phone Services: Common causes when you or the person you called are lost the wireless network signal or switch between campus network and mobile data network.
  • Low-bandwidth networks: If you call over a low-bandwidth wireless network ( < 64 kbps ), optimize your connection for low-bandwidth networks and try again. In Cisco Jabber, tap Settings > Call > Audio and Video. Tap the Low Bandwidth Mode switch to turn it on.

For better experience, you may avoid unnecessary movement and stay in a place where can provide a stable wireless network environment, or using mobile data network when you need to move around inside or outside the campus during the calls.