24th September 2009, 09:17 pm
If you are using Trixbox (or probably any Asterisk distribution) with SIP trunks and the Dahdi dummy driver and experiencing poor audio or music on hold then it may be worth changing the ‘internal_timing’ setting.
This can be set be editing the file – /etc/asterisk/asterisk.conf file and making sure that the following 2 lines are not commented out (they should not have a ; in front of them) -
[options]
internal_timing = yes
In some cases this can improve the audio quality dramatically.
14th September 2009, 05:58 pm
If you lose or forget your a2billing 1.4 root password then there is a simple procedure for resetting it by editing the MySQL database.
To do this you’ll need to get SSH access to your server. If you use Windows then Putty is a good, free application for this.
1. Log in to your server as root
2. Determine the database name, user and password for your A2Billing database
Continue reading ‘Reset A2Billing 1.4 root password’ »
14th September 2009, 04:51 pm
If you have upgraded your version of Asterisk and find that your IAX2 extensions no longer work then the cause could be a change to the IAX protocol. This was made to resolve a security issue that could result in a denial of service attack.
You will see this error in the Asterisk log file if you are suffering from this issue -
chan_iax2.c: Call rejected, CallToken Support required.
If you use FreePBX then Asterisk can be made to function the same as before by adding the following 2 lines to /etc/asterisk/iax_general_custom.conf -
calltokenoptional = 0.0.0.0/0.0.0.0
maxcallnumbers = 16382
You will also need to do a -
or restart Asterisk for the changes to take effect.
More information about the reason for this change and the implications for disabling call token checking can be found here –
http://svn.digium.com/svn/asterisk/branches/1.6.0/doc/IAX2-security.pdf
8th September 2009, 10:40 pm
It is now possible to run “Skype for Asterisk” (SFA) from Digium on a Sysadminman VPS. This allows calls to/from Skype users from your Asterisk server.
SFA can be installed on any of the VPS templates including Trixbox, Elastix, PBX-in-a-Flash (PIAF) and Sysadminman. Please note though that installing it on PBX-in-a-Flash requires upgrading the version of Asterisk to what PIAF considers an ‘unsafe’ release.
SFA licenses are $66 per channel from Digium and can be purchased here. You will need to purchase the number of licenses you require before SFA can be installed.
If you are an existing Sysadminman customer and wish to install SFA please raise a support ticket asking for a dummy eth0 device to be created for your VPS. This is required to license SFA.
Sysadminman can install and configure SFA on your VPS for a charge of £20.
