AT&T SB35020 User's Guide Page 104

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Troubleshooting 104
Syn248 SB35020 Deskset User’s Guide Back to Contents
Outgoing Calls
No dial tone.
When you dial an outside number, you reach an extension instead.
You cannot make calls to an outside number.
DDNs (Directory Dial Numbers) do not dial out properly from the Call Log.
Probable Cause Corrective Action
Handset cord is plugged into
the wrong jack.
Ensure the handset cord is plugged into the
handset jack on the side of the Deskset. Do not
connect the handset cord to the corded headset
jack on the back of the Deskset.
Probable Cause Corrective Action
You predialed a phone
number with an area code
that matches an extension
number, then you pressed
the Intercom key.
After predialing an outside phone number, press
an available Line key to dial the number.
Probable Cause Corrective Action
An outside phone number
cannot be accessed through
the Gateway.
If you see All Phone Lines Busy on the Deskset
screen, try again later because all outside lines
may be in use.
Ensure that a Gateway is connected to the
network and that it resides on the same subnet
as the Deskset.
Probable Cause Corrective Action
This system does not support
DDN.
DDNs in the Call Log are treated like all other
caller ID phone numbers.
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