Put Comrex On The Line.
Toll Free in USA: 800-237-1776 • www.comrex.com
e-mail: [email protected]
19 Pine Road, Devens, MA 01434 USA
Tel: +1-978-784-1776 • Fax: +1-978-784-1717
Bluebox STL Backup Mode
The BlueBox has a special feature called STL Backup Mode that allows the unit to automatically initiate and
maintain a POTS codec call. When this feature is engaged, the BlueBox will dial the number stored in Qdial
01, and redial the call should the line drop for any reason. STL Backup Mode is engaged from the “Hidden
Menu” (this menu is hidden to prevent casual users from accessing it and setting parameters that will cause
the BlueBox to malfunction). Before STL Backup Mode can be utilized, a jumper must be moved on the main
board and a contact closure must be connected to the Multipurpose Port.
The following steps detail the necessary modifications and programming instructions to set the BlueBox for
STL Backup Mode:
Step 1
Make sure that your BlueBox is turned OFF and removed from AC power. This step describes the procedures
for opening up the BlueBox and moving the jumper on the main board.
Start by removing the screws on the three side panels, (7) screws total.
Then turn the unit over and remove the (6) large, self-threading screws located on the outer edge.
Remove the (7) smaller screws that are in the slotted holes. The bottom should now come off.
Turn the unit over so it is face-up. Remove the black screw located under the power switch; the main board
will drop down.
Locate J23 (see Figure 1). Move the midgie down by one pin, leaving the pin closest to the RJ11 jack open.
Note: The jumper must be restored to its original position before using the Multipurpose Port for upgrading
and/or cellular connections.
Slide the main board in and reassemble.
Note: Only start the slotted hole screws and tighten down after all other screws are in.
