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Appendix
Troubleshooting
If you have difficulty with your telephone, please try the suggestions below.
For customer service, visit our website at
1 (800) 222-3111
call
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
•
MS2015 Engraving:
If there is no dial tone when you press HEADSET, make sure the corded
•
headset is firmly connected to the
MS2085 Engraving:
5.1
. In Canada, dial
Use only
Supplied
Adapter
Use only
Supplied
L4
L3/4
L2
Adapter
www.telephones.att.com
1 (866) 288-4268
jack.
L1/2
78
or
.
.
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