Administrator’s Guide for VP59/SIP-T58A/CP960 IP Phones
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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
inherent limitations with Bluetooth technology.
You cannot connect the IP phone to the 2.4G/5G wireless network
If you successfully connect the IP phone to the 2.4G/5G wireless network, but the video images is not smooth. Or,
you cannot connect the IP phone to the 2.4G/5G wireless network.
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Check if there are too many wireless devices connecting to the same 2.4G/5G wireless network.
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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:
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Ensure that the target firmware is not the same as the current firmware.
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Ensure that the target firmware is applicable to the IP phone model.
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Ensure that the current or the target firmware is not protected.
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Ensure that the power is on and the network is available in the process of upgrading.
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Ensure that the web browser is not closed or refreshed when upgrading firmware via the web user interface.
Verifying the firmware version
Tap Settings > Status when the IP phone is idle to check the firmware version. For example
58.83.0.15
.
Item
Description
1
58
Firmware ID.
The firmware ID for each IP phone model is:
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91: VP59
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58: T58A
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73: CP960
2
83
Major version.
Note: The larger it is, the newer the major version is.
3
0
A fixed number.
4
15
Minor version.
Note: With the same major version, the larger it is, the newer the minor version is.
Содержание One Talk CP960
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