Landslide Performance Test System – Release 24.3 September 2024

About VoLTE ODCs Sequencer

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VoLTE ODCs allow:

• breaking the existing VOLTE message flow to smaller parts/phases;
• having control over these parts/phases by ODCs in a run time;
• having a possibility to combine some of these phases together by a Sequencer;
• blending VOLTE into the existing UE ODC/Sequencer functionality.

 

VoLTE ODcs/Sequencer functionality is available for:

• SGW Nodal and MME Nodal when VoLTE is enabled;

•   IMS Node when P-CSCF mode is set to “SIP Endpoint” (IMS Node emulates SIP registrar and SIP Endpoint).

VoLTE ODCs utilize script/action approach that was recently developed for VoLTE. Each ODC is a VoLTE script that consists of one or more VoLTE actions. User can use preconfigured built-ins VoLTE scripts or create any new one script using available VoLTE actions.

 

VoLTE built-in scripts cover the following functionality:

• Register UE (not available for IMS Node)
• • Registration (success, no authentication)
• Register/Auth UE (not available for IMS Node)
• • Registration (success, authentication required)
• Simple Call
• • Call_Connect
  • Start_Media
  • Wait
  • Stop_Media
  • Call_Disconnect
• Place Call
• • Call_Connect
  • Start_Media
  • Wait
  • Stop_Media
• End Call
• • Call_Disconnect
• Add Media
• • Call_Add_Media
  • Start_Media
  • Wait
  • Stop_media
• Remove Media
• • Call_Remove_Media
  • Start_Media
  • Wait
  • Stop_Media

   

  Simple MCPTT Private Call / Simple MCPTT Private Call With Floor Control - (SIP Built-in Script (Simple MCPTT Private Call)

Provisioning VoLTE ODCs/Sequencer

 

VoLTE / Vo5G Nodal test cases (AMF Nodal, MME Nodal, SGW etc):

• Enable VoLTE

• Use “Test Activity” drop-down list to select “Command Mode” or “Sequencer”.

IMS Node:

• Use “Command Mode” radio button to turn on Command Mode or Sequencer (“On” or “ Sequencer” respectively)

 

Every Test Session has to have multiple pre-configured VOLTE scripts this session is associated with (unlike “Capacity Test” mode). Landslide’s GUI provides a way to pick an appropriate script while user is configuring a particular VoLTE ODC in Command Mode or Sequencer.  By default these scripts are copied from built-in scripts and preset in a table.

 

Gm tab will show available by default VoLTE scripts on top:

 

“Reset/Continue” column setting is used accordingly to control either user wants to start a new script (Starts New) for particular SIP subscribers or to continue the script previously performed (Continuation). Such scripts as End Call, Add Media and Remove Media are a “continuation” of “Simple Call” or “Place Call”.

 

Command Mode

• Run the test. "Command" button will appear

• Click on “Command” button; select “Execute Volte Script” tab; the “Operation” drop-down list presents all possible VoLTE scripts from Gm tab to be used as ODCs.

 

Sequencer

• Select “Command Sequence” tab;
• Pick “OnDemandCommand” from “Add” drop-down list;
• “Add OnDemand  Command” window appear;
• Select “Execute Volte Script” and continue as shown above.

 

Note: In the case of local IMS Node used on SGW Nodal or MME Nodal VOLTE ODC configuration becomes shared between VoLTE Nodal and IMS Node entities like DMF or Phone Book configurations.

ODC parameters

Only ODC common parameters are applicable for all VOLTE ODCs; no other (specific) parameters are needed:

• Rate -  number of activated SIP Subscribers sessions per sec;

• Starting Index of SIP Subscribers

• Ending Index of SIP Subscribers

 

Gm tab

User can create new or delete existing VoLTE ODCs by creating new or deleting existing VoLTE scripts.

The following example shows how to create a new VoLTE ODC:

• Select Gm tab / Control sub-tab
• Click on “+” button on top “SIP Script” table
• A new script (with pre-defined name “Script_8”; user can change the name later) will appear
• Use “Actions” sub-tab and   “Add to flow” button create Actions in Script_8

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Next time when user will select a VoLTE Command this new script - Script_8 - will be added to the command list:

 

  

 

VoLTE CommandMode Scripts, Caller Configuration Table View

 

In VoLTE Command Mode (or Sequencer) you get to define a list of Scripts from which you can execute via ODCs.

To help make sure your scripts are defined correctly, there is a dialog to show you the Caller configuration across all the Scripts, so that you can see the assigned Subscribers and Endpoints line up across multiple Scripts.

 

In this example, one script is doing every 4th Subscriber (1,5,9 & 2,6,10) and the other is doing odds/evens (1,3, 5 & 2,4,6) so they do not line up.

 

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