AT&T SB67040 User Manual page 279

Symptom
Incoming Direct Inward
Dialing calls fail, or the caller
hears, "Invalid extension."
I cannot find the specific DID
number for assignment on
the DID Assignments
screen or the Fax
Configuration screen.
Even though I have a Trunk
reservation, there is no
outside line available for
dialing calls.
The PTSN Trunk reservation
is not being honored.
I cannot make an outgoing
call on a system with
reserved trunks.
Troubleshooting
Synapse User's Guide
Probable Cause
There may be a DID settings
error or the Deskset is not
connected to the system.
There may be a DID range
error or the DID has been
used.
Incoming calls can use
reserved trunks or channels.
All available channels may
be busy with the incoming
calls.
An incoming call may be
using that line. Parking calls
and forwarding calls on a
reserved trunk does not free
up the trunk.
All lines and channels are
being used for active or
incoming calls, or are
reserved for other
extensions.
Corrective Action
Verify that the Deskset is connected to the system and
has power.
Verify that the DID has been assigned to the correct
extension. On the administrator WebUI, click Extension
Settings, then Basic Settings. Verify the Select
Extension number and select the DID number from the
Select DID drop-down list.
The DID is not within the DID ranges configured or the DID
has been already assigned to another Deskset. Check the
DID ranges configuration in the Admin WebUI. Click
System Settings, then Direct Inward Dial, and verify
the Current DID Ranges.
Wait for an available channel or contact your service
provider to add more voice channels.
Set up Trunk Routing to reserve the incoming path to the
'special' extension. On the administrator WebUI, click
System Settings, then Trunk Routing.
Forwarded call must end before the reserved trunk is
available.
If all trunks are reserved, extensions with trunk
reservations cannot make calls. The SA can either remove
the reservations from some trunks or arrange for
additional analog telephone lines or T1 channels.
279
Gateway Troubleshooting