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Grandstream GPX-2000

After I used the SIP protocol for VOIP for some time I decided to buy the Grandstream GPX-2000. On this page I like to collect some useful information about it.
17-10-2005 01.12

Links

Some links to sites about the GPX-2000:
26-11-2005 16.22

3.5mm Headset Connection

The Grandstream GPX-2000 has one 3.5mm headset-connector. The problem: Most headsets have two 3,5mm connectors. To solve this I built an tiny adapter.
If you decide to build your own please notice that you do on you own risk. I may be totally wrong on this page so decide yourself if this sounds reasonable or not.
First get a 3.5 mm phone jack (male) where you can solder a cable. Later you'll put this jack into the Grandstream.
3.5 mm phone jack male3D picture 3.5 mm phone jacke male
Obviously the jack is wired like this:
  • Inside (red): Microphone (left and right combined, mono)
  • Center (yellow): Earphones (left and right combined, mono)
  • Outside (blue): Ground
Now you need two phone jacks (female) that fit the the phone jacks (male) of your headset. They wired like this:
3D picture 3.5 mm phone jack female
  • phone jack 1:
    • Inside (red): Microphone channel 1 (left or right)
    • Center (rot): Mikrophon channel 2 (right or left)
  • phone jack 2:
    • Inside (yellow): Earphones channel 1 (left or right)
    • Center (yellow): Earphones channel 2 (right or left)
  • Outside (blue): ground
Now just connected them all:
  • Connect all grounds together
  • Connect the microphone jack from the Grandstream with the both channels of one of the female jack
  • Connect the earphone jack from the Grandstream with the both channels of the other femal jack

And here is my final result:
Grandstream 3.5mm adapter
17-10-2005 00.09

Redialing

  • Just press SEND
  • Just press # (if you enabled it in the configuration)
  • Press >, select one of the numbers you dialed and then press SEND
17-10-2005 00.09

Upgrade from your own Server

You can configure the Grandstream 2000-GXP to check regularly fro new updates from a http Server. If you configure this server
example.com/foo/
it will search for the following files:
http://example.com//gs/boot55.bin
http://example.com//gs/gxp2000.bin
http://example.com//gs/ring1.bin
http://example.com//gs/ring2.bin
http://example.com//gs/ring3.bin
http://example.com//gs/cfg.txt
17-10-2005 18.25

Beta Firmware 1.0.2.13

Grandstream GPX-2000 missed callGrandstream GPX-2000 menu
02-04-2006 03.25
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