Diameter Protocol based Application Development

Diameter is one of the main interfacing protocols defined in the 3gpp standard. (For people who do not know what this is, 3GPP essentially defines the telecommunication architecture and its related standards.) Its uses include

1. Online and Offline charging applications
2. Online authentication

Diameter protocol uses a set of sub units called "AVP". Each AVP contains a specific type of information. This type of information can be anything from a simple login name to a much more complex charging attribute ( I will discuss them in a later post). Each AVP is identified by a numeric code.

3GPP standard has defined a set of standard AVPs. These AVPs include,

1. Host Name AVP
2. Destination Host AVP, etc.