EN
The GBX20 is not pre-configured to support or car-
ry emergency calls to any type of hospital, law en-
forcement agency, medical care unit ("Emergency
Service(s)") or any other kind of Emergency Ser-
vice. You must make additional arrangements to ac-
cess Emergency Services. It is your responsibility to
purchase SIP-compliant Internet telephone service,
properly configure the GBX20 to use that service,
and periodically test your configuration to confirm
that it works as you expect. If you do not do so, it is
your responsibility to purchase traditional wireless
or landline telephone services to access Emergency
Services.
GRANDSTREAM DOES NOT PROVIDE CON-
NECTIONS TO EMERGENCY SERVICES VIA THE
GBX20. NEITHER GRANDSTREAM NOR ITS OF-
FICERS, EMPLOYEES OR AFFILIATES MAY BE
HELD LIABLE FOR ANY CLAIM, DAMAGE, OR
LOSS. YOU HEREBY WAIVE ANY AND ALL SUCH
CLAIMS OR CAUSES OF ACTION ARISING FROM
OR RELATING TO YOUR INABILITY TO USE THE
GBX20 TO CONTACT EMERGENCY SERVICES,
AND YOUR FAILURE TO MAKE ADDITIONAL AR-
RANGEMENTS TO ACCESS EMERGENCY SER-
VICES IN ACCORDANCE WITH THE IMMEDIATE-
LY PRECEDING PARAGRAPH.
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PRECAUTIONS:
WARNING:
Please DO NOT power cycle the GBX20 during system boot up
or firmware upgrade. You may corrupt firmware images and cause the unit
to malfunction.
WARNING:
Use only the power adapter included in the GBX20 package.
Using an alternative non-qualified power adapter may possibly damage the
unit.
OVERVIEW:
GBX20 delivers additional functionality, versatility and flexibility to Grand-
stream compatible phones (GRP2615, GRP2624 & GXV3350). The GBX20
module features a large 480x272 graphic color LCD or and 20 programmable
buttons (each with dual color LED). In addition, it allows up to 40 extensions
per module by using the 2 page switch keys and up to 160 buttons when 4
extension modules are daisy-chained together. The GBX20 module is con-
nected, powered, and controlled by the GXV3350/GRP2615/GRP2624, pro-
viding the benefits of the additional keys instantly. The GBX20 supports the
traditional call features on each of its programmable buttons, including BLA
(bridged line appearance)/SCA (shared call appearance), BLF (busy lamp
field, standard or eventlist), Call Park/Pick-up, Speed Dial, Presence, Inter-
com, and conference/transfer/forward. The GBX20 is the ideal solution for
offices that manage high call volumes or an office receptionist. By using the
GBX20, the telephone attendant can ensure maximum office productivity by
efficiently monitoring and dispatching multiple incoming calls.
PACKAGE CONTENTS:
1x GBX20 Extension
Board Stand
1x GBX20 Exten-
sion Board
1x 12V/1A Power Adapter
1x Extension Board
1x TypeA-MicroB
Connector Plate
USB Cable
1x Screw
1x Quick Installa-
tion Guide
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