I pay for the guy who can connect my Grandstream gxp 2000 callbutler

Jan 20, 2009 at 3:26 PM
Hey all,

for my business i need to connect my new Grandstream gxp 2000 to callbutler
but i cannot do it.. ive tried couple things.. like 3cx  that one works but i need callbutler!

PLEASE contact me or post here if u can help me i will pay good
Jan 21, 2009 at 6:33 PM
Have you looked at the instructions in the CallButler PBX Users Manual?  You can access the CallButler Users Manual by going to Start > All Programs > CallButler Open Source PBX > Help > CallButler Users Manual.  In the manual, go to the "How To..." section > "Use IP phones and softphones" > "Setting up a Grandstream GXP2000".
May 3, 2009 at 2:24 PM
Edited May 3, 2009 at 2:25 PM
Alright, lets make this sucker work!!!!

I have the same phone and I GOT IT TO WORK!! Here is how I tested it:

*Callbutler server is behind NAT firewall at one location
*Forwarded port 5060 UDP to Callbutler server internal IP
*Have GXP-2000 at another location also behind NAT firewall

for SIP server and outbound proxy just type IP of callbutler server IF your server is listening on port 5060, IF NOT listening on (default) port 5060 then you must type it in the IP:port combination with 5061 for example being the port number you changed callbutler to listen to on. (ex.

**Don't change local SIP port, thats for something else!

Here is the screenshot:
May 3, 2009 at 2:29 PM
Also, you can make the register expiration higher if you want, I was just testing and I set it lower