Developer:LPEC

Introduction

Linn's UPnP products can be controlled over a home network in an ever increaing number of ways.

The primary means of control is, of course, UPnP itself, which subdivides product control into smaller units called services.

A DS product, for instance, will provide some standard UPnP AV services:

• AVTransport
  
• RenderingControl
  
• ConnectionManager
  

and additional Linn-specific services, such as:

• Ds
  
• Volkano
  
• Product
  
• Ui
  

It is possible in Bute and later software releases to control a Linn UPnP product using an alternative mechanism known as the Linn Protocol for Eventing and Control.

This is a basic Telnet-like protocol, which relies on the developer knowing in advance, or having discovered by some means, the TCP/IP of the device to be controlled. Knowing this, LPEC can be accessed by creating a raw socket session to port 23 of the device.

The rest of this document describes the format of the messages that LPEC expects and delivers.