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Archive for the VOIP Category

02.23.2010

Configure Acrobits SIP iphone app to externally access 3CX VOIP server so RTP voice traffic works

If you are trying to get Acrobits SIP phone working on your iPhone with the 3CX VoIP telephone system use the settings indicated below.
For the domain entered the local network DNS name of the server i.e. what is used to connect to 3CX on the local network.

For Register via leave the default setting of domain

Here [...]

08.18.2009

Asterisk Music on Hold MOH Sound Choppy in and out using Pennytel and engin

When we put a call on hold using out asterisk server the Music on hold would chop in and out.
We found this choppiness only occurred using Pennytel and Engin, other VOIP providers the MOH was smooth.
Try this:

Make sure you’ve compiled zaptel and have ztdummy loaded.
Login to the server. If connecting from a windows system you [...]

07.8.2009

Configuring external SPA942 IP SIP phone with 3CX

The instructions “How can I use the 3CX Tunnel with a SIP hardphone?”
on the 3cx site at http://www.3cx.com/support/3cx-tunnel.html are DUD – IGNORE THEM.
If you want to configure a SIP hardphone the default tunnelling port is 5090, not 5080. To see the Proxy and Registration settings as shown below on the SPA 942 in the admin setting [...]

07.8.2009

What VOIP ports to open and forward for 3CX

3CX needs the following ports forwarded to the VOIP server in order to work. The documentation does not by default describe which ones are meant to be TCP and which UDP so here they are:

Port 5060 (TCP and UDP) – Used for SIP protocol transmission – must be a static mapping, no port translation
Port 5090 [...]

07.5.2009

Installing Windows 3CX VOIP telephone system with Pennytel – Part 2

Configuring Pennytel as a VOIP provider
After the intial 3CX install see http://technicians-blog.kingcomputer.com.au/index.php/installing-windows-3cx-voip-telephone-system-with-pennytel-part-1/
 Highlight VOIP providers and on the toolbar click Add Provider. Fill out the details for your pennytel account as shown. Make sure you have a trunk service from pennytel, otherwise you will only get one call in or out at a time. I set the [...]

07.5.2009

Installing Windows 3CX VOIP telephone system with Pennytel – Part 1

I have been configuring a 3CX Windows Voice over IP phone system. We use an Asterisk VOIP system in the office but I thought I would have a look at windows based VOIP system. 3CX offer a free edition for up to 4 simultaneous lines, but the enterprise version for more lines is still under [...]

02.25.2009

YOU MUST ACCESS THE CDR THROUGH THE ASTERISK MANAGEMENT PORTAL!

When opening the Call Detail Reports section of FreePBX, you may get the following error:
YOU MUST ACCESS THE CDR THROUGH THE ASTERISK MANAGEMENT PORTAL!
This occurs when the php session save path is not writable by the httpd process.
1. Determine the save path:
grep save_path /etc/php.ini

should result in something like:
session.save_path = /var/lib/php/session
2. Fix ownership
For the identified directory, [...]