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550 relay access denied sending e-mail
"550 Relay Access Denied" is a very typical error that you will get when there is something wrong...
Beneficiary number and Recharge Code
  Recharge Code= This is the code you use when you purchase airtime BEFORE you log into...
Calls Using 3G and WiFi on Android with O-Tel
  SipDroid is an open source SIP client that allows you to make calls via SIP/VOIP on an...
Common Billing Structures
These are common Billing structures as at 1 May 2011   Retail/ home users: (bills less than...
How to setup up RADIUS for use with MikroTik
Let's say that you have mysql and freeradius installed in your system and would like to use it...
Incoming call Transfer rule
  Overview When the Transfer to rule is set up, you can transfer the...
No G711 in Grandsteam Gateway
Q. There is no G711 in my Grandstream Gateway? A. Some gateways portray G711a or G711u as PCMa,...
Radius Installation
Radius Step by Step installation on centos 5 & 6   Just follow the...
Settign up Raid
Untitled Document RAID 0, RAID 1, RAID 5, RAID 10 Explained with Diagrams...
Uplink Bandwidth problem
This is either too many concurrent calls on single ADSL or really ADSL...
Wireless connection are of two type. Licenced and un-licenced bands
  Licenced Band Licenced bands comprises of a few bands, with the most popular beinf of 2.1ghz...