Objectives

Call control is a software within the IP phone that is used to supply the phones central function. Changing this setting determines whether or not the phone will be using SPCP or SIP. SPCP stands for Simple Phone Control Protocol. SIP stands for Session Initiation Protocol.

The objective of this document is to explain how to configure call control on SPA500 Series devices.

Applicable Devices

• SPA500 Series

Configure Call Control Settings

Step 1. Press the Setup button to open the Setup menu.

Step 2. Navigate to Call Control Settings and press Select using the soft-key.

Step 3. Press **# to unlock the phone and change settings.

Step 4. Press Edit to change the Signalling Protocol.

Step 5. Press Option to toggle between SPCP and SIP. Press OK to choose one.

• SPCP — Simple Phone Control Protocol, offers more flexibility than SIP.

• SIP — Initiates a call but doesn't have as many capabilities as SPCP.

Step 6. Navigate to SPCP Auto Detect and press Select using the soft-key. Press Edit to change the SPCP Auto Detect settings.

Step 7. Press Y/N to toggle between Yes and No. Press OK to determine whether or not to activate SPCP Auto Detect.

Step 8. Press Save to save your settings.