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If you have difficulty with your telephone, please try the suggestions below.
For customer service, visit our website at www.telephones.att.com or
call 1 (800) 222-3111. In Canada, dial 1 (866) 288-4268.
The deskset fails to obtain an IP from the router.
Make sure your router is properly installed and plugged into the
Ethernet network.
Make sure the DHCP is enabled on your router, so that it can allocate
IP automatically.
You may need to enter a static IP to the deskset. Refer to Network setup
on page 23 for details.
The deskset displays Check Network.
Make sure your deskset is connected to the router properly.
If you have set a static IP manually, you need to reboot the deskset to
apply the new setting.
Your router may have reassigned a new IP address to the deskset. Reboot
the deskset to update.
You Ethernet cable may be defective. Try installing a new one.
My telephone base doesn’t work at all.
Make sure the power cord is securely plugged in.
Make sure you plug the Ethernet cable securely and firmly into the deskset
and the router.
Refer to Deskset installation on pages 7-9 to reset the system. Allow at
least one minute for the deskset to reset.
This system is not compatible with any other AT&T 4-line small business
telephones, except for the MS2085 and MS2025 telephones.
There is no dial tone.
First try all the suggestions above.
Make sure you plug the handset cord securely and firmly into the
jack on
the deskset and the corded handset.
Your Ethernet cable might be defective. Try installing new ones.
Make sure a line is selected. Press a line key or SPEAKER .
If there is no dial tone when you press HEADSET, make sure the corded
headset is firmly connected to the
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