Administrator’s Guide for SIP-T58V/T58A/T56A/CP960 IP Phones
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Wi-Fi and Bluetooth Issues
The wireless signal strength is low
Ensure the IP phone and your gateway/ router are within the working range and there is no obvious interference (walls,
doors, and so on.) between them.
The phone cannot connect to Bluetooth devices all the time
Try to delete the registration information of the Bluetooth device on both IP phone and Bluetooth device, and then
pair and connect it again. Contact Yealink field application engineer and your Bluetooth device manufacturer for more
information.
The Bluetooth headset affects IP phone’s voice quality
You may not experience the best voice quality if you use a Bluetooth headset while the 2.4 GHz band is enabled or
while you are in an environment with many other Bluetooth devices. This possible loss in voice quality is due to inher-
ent limitations with Bluetooth technology.
You cannot connect the IP phone to the 2.4G wireless network
If you successfully connect the IP phone to the 2.4G wireless network, but the video images is not smooth. Or, you can-
not connect the IP phone to the 2.4G wireless network.
l
Check if there are too many wireless devices connecting to the same 2.4G wireless network.
l
Verify whether the distance between IP phone and the wireless router is too far.
Firmware and Upgrading Issues
Fail to upgrade the phone firmware
Do one of the following:
l
Ensure that the target firmware is not the same as the current firmware.
l
Ensure that the target firmware is applicable to the IP phone model.
l
Ensure that the current or the target firmware is not protected.
l
Ensure that the power is on and the network is available in the process of upgrading.
l
Ensure that the web browser is not closed or refreshed when upgrading firmware via web user interface.
Verifying the firmware version
Tap
Settings
->
Status
when the IP phone is idle to check the firmware version. For example: 58.80.0.5.
Item
Description
1
58
Firmware ID.
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