User`s guide
Polycom VVX Expansion Module Administrator’s Guide Addendum  UC Software 4.1.6 
Polycom, Inc.  30 
Customize Enhanced Feature Keys 
The Enhanced Feature Keys (EFK) feature enables you to customize the functions of any line keys, soft 
keys, and hard keys on VVX phones and expansion modules. You can use EFK to assign frequently used 
functions to line keys, soft keys, and hard keys or to create menu shortcuts to frequently used phone 
settings on VVX 300, 310, 400, 410, 500, and 600 phones running UC software 4.1.6 or later. 
See the table Configuring Enhanced Feature Keys for parameters you can configure and a brief 
explanation of how to use the contact directory to configure line keys. Enhanced feature key functionality 
is implemented using star code sequences (for example, *69) and SIP messaging. Star code sequences 
that define EFK functions are written as macros that you apply to line and soft keys. 
The rules for configuring EFK for line keys, soft keys, and hard keys are different. Before using EFK, you 
are advised to become familiar with the macro language and parameters shown in the <efk/> section. For 
more information on configuring enhanced feature keys and using macros, see Understanding Macro 
Definitions in the Polycom UC Software 4.1.0 Administrator’s Guide. 
Web Info: Using Enhanced Feature Keys 
For instructions and details on how to use Enhanced Feature Keys, refer to Technical 
Bulletin 42250: Using Enhanced Feature Keys and Configurable Soft Keys on SoundPoint IP, 
SoundStation IP, and VVX 1500 Phones. 
Note that you can include the configuration file changes and the Enhanced Feature Key definitions 
together in one configuration file. Polycom recommends creating a new configuration file to make 
configuration changes. 
Configuring Enhanced Feature Keys 
Central Provisioning Server ................................................................................................ template > parameter 
Specify at least two calls per line key ............................................................ reg-basic.cfg > reg.x.callsPerLineKey 
Enable or disable Enhanced Feature Keys .......................... features.cfg > feature.enhancedFeatureKeys.enabled 
Specify the EFK List parameters ................................................................................... features.cfg > efk.efklist.x.* 
Specify the EFK Prompts ........................................................................................ features.cfg > efk.efkprompt.x.* 
Because line keys and their functions are linked to fields in the contact directory file - 
000000000000-directory.xml (global) or <MACaddress>-directory.xml (per phone) - you need to 
match the contact field (ct) in the directory file to the macro name field (mname) in the configuration file 
that contains the EFK parameters. When you enter macro names to the contact field (ct) in the 
directory file, add the ‘!’ prefix to the macro name. For more detailed information on using the contact 
directory, see Using the Local Contact Directory in Polycom UC Software 4.1.0 Administrator’s Guide
 ............................................................................................................................ 000000000000-directory~.xml 
Guidelines for Configuring Enhanced Feature Keys 
Read the following guidelines to learn how to configure EFK efficiently: 










