PCBest Network SIP PBX

A Windows based SIP PBX application. It can answer a call, and trafer the call to multipul destinations after playing prompt.
It has all the functions of PCBest Network ActiveX Phone clients, with configurable channel numbers, and SIP account setting.
It supports most of major SIP hardwares and softwares, and can transfer calls by caller's choices.
It also supports transfering between calls which have different audio codecs.

Support NAT traversal via STUN & symmetric RTP
Interoperable with various 3rd party SIP end user device, Proxy/Registrar/Server, and gateway products
Advanced Software Digital Signal Processing (DSP) to ensure superb hi-fidelity audio quality
Advanced and patent pending adaptive jitter buffer control, packet delay & loss concealment technology
Support popular vocoders including G.711 (a-law and u-law), G.726, GSM, iLBC(20ms and 30ms) and Speex.
Dynamic negotiation of codec and voice payload length
Support Silence Suppression, VAD (Voice Activity Detection), CNG (Comfort Noise Generation), Line Echo Cancellation (G.168), and AGC (Automatic Gain Control)
Support DIGEST authentication and encryption using MD5 and MD5-sess.

Want to try? Click here to download a trail version of PCBest Network PBX. The only limitation of trail version is it will shut down after running one hour. If it is really useful for you, please purchase a licence key for retail version. Thanks.

Want to get the source code of this PBX? Go SIP SDK page to get it.

Installation Guide:

Step 1: Download.

Step 2: Install.

Step 3: Open installation-folder\config\GTPBXSrv.ini to configure.

Options explaination:

gtsrv.sip.ip.address
If you have multipul ip address and you want pbx only run on one of those ip address, enable this option, and fill the ip address.

gtsrv.sip.ip.port
your local sip ip port 

gtsrv.sip.rtpstartrange and gtsrv.sip.rtpendrange
RTP port range 

gtsrv.sip.prefered.codec = 102,101,100,3,98,0,8 
prefered audio codecs and order
102 = Speex
101 = iLBC 30ms
100 = iLBC 20ms
3 = GSM
98 = G726-32
0 = G711 - Mulaw
8 = G711 - Alaw

gtsrv.licence.key
input your licence key here if you purchased one

gtsrv.sip.boardnum.per.server, gtsrv.sip.spannum.per.board,  gtsrv.sip.channum.per.span
you can define how many boards on one server, how many spans on one board, how many channels on one span.
gtsrv.sip.boardnum.per.serve * gtsrv.sip.spannum.per.board * gtsrv.sip.channum.per.span is the total channels you have.

gtsrv.sip.reg.client.num
SIP account info. How many sip clients you want pbx to have to answer incoming calls.

gtsrv.sip.reg1.displayname
gtsrv.sip.reg1.username
gtsrv.sip.reg1.domain
gtsrv.sip.reg1.proxy
gtsrv.sip.reg1.authorization
gtsrv.sip.reg1.password
gtsrv.sip.reg1.expire

Step 4 :

Run gtsippbx.exe from start menu/programs/PCBest Network/SIP PBX.
You should be able to get this screen:

Step 5 :

Follow the instruction on the picture to configure. Then click start.