These instructions describe how to configure softphone functions (SIP) for ProCall Enterprise in connection with an OXO Connect telephone system from Alcatel-Lucent.

ProCall Enterprisefrom V 6.1
PBX
Alcatel-Lucent OXO Connect
Release R22

Notes on the estos test environment

The softphone functions (SIP) of ProCall were tested in the estos test environment with the telephone system specified above. The tests were performed with a maximum of two lines per SIP end device. The following information was used during the setup of the telephone system for the login/registration of the individual SIP lines to the UCServer. 


Note on codecs and UDP connections

For the connection of SIP lines to the UCServer, the telephone system must support the G.711 a-law codec for the SIP protocol and should have this set as the preferred codec for all end devices.

Only UDP connections are supported.

Only one registration per SIP extension is allowed, otherwise, the functions Forward without call acceptance and Call forwarding in the UCServer cannot be executed by the telephone system without errors.

In addition, estos recommends setting the Expire Time for registration as low as possible.

Use of call forwarding in the UCServer

If the Call forwarding feature is used in the UCServer, the SIP lines must allow second calls in order to use the Call forwarding when busy feature.

Configuration of the telephone system Alcatel-Lucent OXO Connect

Participants/base station set up for ProCall must be created as an IP set.

Menu – Participants: Add – NSt

The extension (NSt) is required for UCServer login.

Menu – Participants/Base station list – Phy. Adr. 

The extension/participant must be assigned as the device/base stat. Open SIP Phone must be assigned.

Participants menu

After creating the participant, the settings under IP/SIP must be edited.

In the IP Parameters tab 

If all codecs are activated in the Alcatel-Lucent OXO Connect under Voice Over IP – VoIP:Parameters, the IP terminals are set to G.722 by default. In this case, the voice coding must be changed to G.711.

In the SIP Parameters tab

A SIP password must be assigned here or the automatically generated one must be noted.

UCServer configuration

The settings are made in the UCServer administration as SIP Softphone connection under Lines.


  1. Add telephone system 
    Select Alcatel-Lucent OXO Connect.
  2. Enter the connection to the telephone system under Softphone Registrations as "SIP Softphone".

    Under Registrar/IP address for Alcatel PBX, the port for connection of SIP terminals in the Alcatel-Lucent OXO Connect is set to 5059 by default.

    In the connection properties to the Alcatel PBX, the times for registration and register delay should be selected as short as possible.

  3. After setting up the connection, all SIP lines must be added under Softphone Registrations.
    For the connection to an Alcatel-Lucent OXO Connect, the following must be specified:

    as UsernameNSt.
    as PasswordSIP Password

From ProCall 6.1, please note the following settings

On the SIP connection line group it is possible to define what the UCServer signals to the PBX when:

  • The client is not logged in or call protection is enabled
  • The call is rejected by the client or no devices are available

The required settings depend on the telephone system and its configuration.

Example: The telephone system should redirect incoming calls to the mailbox if the ProCall client is not logged in.

Problem: The PBX does not evaluate the busy here (486) sent by default from the UCServer and the calls are not redirected.

Possible solution: In the PBX, this setting is set up for Participant unavailable, and Temporarily unavailable (480) is selected for signaling on the UCServer.


Version note

Since estos has no influence on the further development of the supported telephone systems by the manufacturer, we cannot guarantee that the instructions described above will also be fully valid for future releases.