dispatcher(k): updated description and dependencies

modules_k/dispatcher/README

@@ -190,12 +190,19 @@ Chapter 1. Admin Guide
 
 1. Overview
 
-   This modules implements a dispatcher for destination addresses. It
-   computes hashes over parts of the request and selects an address from a
-   destination set. The selected address is used then as outbound proxy.
+   This module offers SIP load balancer functionality and it can be used
+   as SIP traffic dispatcher. There are many load balancing and traffic
+   dispaching algorithms that you can choose from, like: round-robin,
+   weight based load balancing, call load distribution, hashing over SIP
+   message attributes.
 
-   The module can be used as a stateless load balancer, having no
-   guarantee of fair distribution.
+   The module can be used as a stateless load balancer, it does not depend
+   on any call state tracing module. It requires TM module if you enable
+   auto-discovery of active/inactive gateways.
+
+   It is very lightweight, therefore suitable for handling heavy SIP
+   traffic. Its small footprint and ability to load balancing rules from a
+   text plain file makes it suitable for embedded systems.
 
 2. Dependencies
 
@@ -206,6 +213,8 @@ Chapter 1. Admin Guide
 
    The following modules must be loaded before this module:
      * TM - only if active recovery of failed hosts is required.
+     * database engine - only if you want to load balancing routes from
+       database instead of plain text file. .
 
 2.2. External libraries or applications
 

modules_k/dispatcher/doc/dispatcher_admin.xml

@@ -16,14 +16,21 @@
 	<section>
 	<title>Overview</title>
 	<para>
-		This modules implements a dispatcher for destination addresses. It 
-		computes hashes over parts of the request and selects an address from
-		a destination set. The selected address is used then as outbound
-		proxy.
+		This module offers SIP load balancer functionality and it can be
+		used as SIP traffic dispatcher. There are many load balancing and
+		traffic dispaching algorithms that you can choose from, like:
+		round-robin, weight based load balancing, call load distribution,
+		hashing over SIP message attributes.
 	</para>
 	<para>
-		The module can be used as a stateless load balancer, having no
-		guarantee of fair distribution.
+		The module can be used as a stateless load balancer, it does not
+		depend on any call state tracing module. It requires TM module if
+		you enable auto-discovery of active/inactive gateways.
+	</para>
+	<para>
+		It is very lightweight, therefore suitable for handling heavy SIP
+		traffic. Its small footprint and ability to load balancing rules
+		from a text plain file makes it suitable for embedded systems.
 	</para>
 	</section>
 	<section>
@@ -35,7 +42,15 @@
 			<itemizedlist>
 			<listitem>
 			<para>
-				<emphasis>TM - only if active recovery of failed hosts is required</emphasis>.
+				<emphasis>TM - only if active recovery of failed hosts
+					is required</emphasis>.
+			</para>
+			</listitem>
+			<listitem>
+			<para>
+				<emphasis>database engine - only if you want to load
+					balancing routes from database instead of plain text file.
+				</emphasis>.
 			</para>
 			</listitem>
 			</itemizedlist>