AT&T SB67030 User Manual page 278

Symptom
I cannot make international
long distance calls.
I cannot access phone
company services like 411.
Even though I have a Trunk
reservation, there is no
outside line available for
dialing calls.
Troubleshooting
Synapse SB67030 and Accessories User's Guide
Probable Cause
If no trunk prefix (digit
entered before dialing
outside calls) is set, phone
numbers, including
international or country
codes, that start with 0 (zero)
will go to the Synapse
system operator.
If the PSTN Trunk Prefix is
set to none and any x11
extensions already exist
(such as 411, or 611), then
the extensions take
precedence. In other words,
dialing 411 calls extension
411, not the 411 directory
service. 911 cannot be
assigned as an extension
number.
Incoming calls can use
reserved trunks or channels.
All available channels may
be busy with the incoming
calls.
Corrective Action
Set the PSTN Trunk Prefix to something other than

none. Log into the WebUI as administrator, click
Dial Plan Settings, and then select a digit from the
PSTN Trunk Prefix from the drop-down list.
Change the extension number.

a. Log into the WebUI as administrator, click
Extension Settings, then Basic Settings.
b. Enter a new extension number in the range 100–999
or 1000–9999 into the Change Extension
Number to box.
Ensure that you enter a 9 or whatever digit, if any, that

must be dialed first for an outside call. For example,
9-1-555-0123.
Wait for an available channel or contact your service

provider to add more voice channels.
278
Outgoing Calls