This article describes how to connect a softphone client (linphone, which can be found at https://linphone.org) to Netmodule router with voice compability.


1) Configure the Netmodule router:

**Service -> Voice-Gateway**

  * Enable Voice and select generic for sofphone support. 
  * Enable SIP and choose your SIP interface. 
  * In our case the SIP softclient is connected via LAN1.

{{ :app-notes:voice-linphone1.png?400 |}}

**Define your endpoints**

  * The first endpoint is Voice-over-Mobile which is named Vom1. 
  * The second one represents our softclient, Sip1. 

{{ :app-notes:voice-linphone2.png?400 |}}

**The SIP endpoint is configured as follows:**

  * Type: SIP (registrar)
  * Subscriber: admin
  * User: admin
  * Password: admin01

{{ :app-notes:voice-linphone3.png?400 |}}

**Routing between the enpoints**

The goal is to have bidirectional communication so we route the traffic from Vom1 to Sip1 and vice versa. 

{{ :app-notes:voice-linphone4.png?400 |}}

**Configure our SIP softclient**

In this case, we use linphone running on linux debian 11. Other operation systems should be supported as well. 
We configure a new sip account. "Choose Use sip account"

{{ :app-notes:voice-linphone5.png?400 |}}

**Configuration of the SIP account**

  * Username: admin
  * SIP Domain: 192.168.1.1 (This is router IP)
  * Password: admin01
  * Transport: UDP

{{ :app-notes:voice-linphone6.png?400 |}}