The Sentinel VoLTE provisioning module is distributed as a Rhino Element Manager (REM) plugin.

It requires REM 3.0.0 or compatible. REM can be installed with Jetty or Apache Tomcat. For Sentinel VoLTE, the Apache Tomcat method is required.

To install the Sentinel VoLTE Provisioning module you will need:

Below are the procedures to:

REM restart required

After installing and configuring the plugin, you will need to restart REM, for example by restarting the Tomcat webapp it is running in:

${CATALINA_BASE}/bin/ stop
${CATALINA_BASE}/bin/ start

Set up Tomcat

To set up Apache Tomcat for the Sentinel VoLTE Provisioning module:


Follow the instructions for running REM on Apache Tomcat in the REM Guide.


Create the rem_home/plugins directory.

cd apache-tomcat-<version>
mkdir -p rem_home/plugins


If running Apache Tomcat using Java 1.7, you will need to increase the PermGen size.

Add JAVA_OPTS to bin/

JAVA_OPTS="-XX:PermSize=512m -XX:MaxPermSize=512m"

This step should be skipped if running Apache Tomcat on Java 1.8 or higher.

Install the REM plugin

To install the REM plugin for the Sentinel VoLTE Provisioning Module:


Copy sentinel-volte-element-manager-<version>.em.jar into rem_home/plugins.

cd apache-tomcat-<version>
cp /full/path/to/sentinel-volte-element-manager-<version>.em.jar rem_home/plugins/


(Optional) Copy sis-em-<version>.em.jar into rem_home/plugins.

cd apache-tomcat-<version>
cp /full/path/to/sis-em-<version>.em.jar rem_home/plugins/

Customize plugin logging


Edit and append the following content:

# additional lines to add to the rem.war file

# the XCAP server only logs when user traffic arrives
# per-request logging is at debug level

# the diameter stack in the XCAP Server - logs regardless of user traffic

# transport level logging from the XCAP Server's diameter stack
# set to DEBUG for interoperability diagnostics

# part of the XCAP server logging

# a rolling audit file of Sentinel EM plugin audit logging
appender.sentinelaudit.filePattern = ${sys:catalina.base}/logs/sentinel-audit.log.%i
appender.sentinelaudit.policies.type = Policies
appender.sentinelaudit.policies.size.type = SizeBasedTriggeringPolicy
appender.sentinelaudit.strategy.type = DefaultRolloverStrategy
appender.sentinelaudit.strategy.max = 10
appender.sentinelaudit.layout.pattern="%d{yyyy-MM-dd HH:mm:ss,SSS}", "%c{1}", %m{nolookups}%n

# send Sentinel EM plugin audit logging to the AUDIT appender, only

Import Rhino trust certificate

This can also be done using the REM web UI.


Import a Rhino Trust Certificate into REM:

"${JAVA_HOME}/bin/keytool" -importcert -file ${RHINO_HOME}/rhino-trust.cert -keystore "${TOMCAT_HOME}/rem_home/rhino-ems.ks" -storepass changeit -noprompt

Security considerations

Below are recommendations for securely running the Sentinel VoLTE Provisioning Module.

Use https

Be aware that the Sentinel VoLTE machine API uses HTTP BASIC authentication. This passes the username and password with every request.

To prevent your credentials going over the network unencrypted, run REM over https.

Set up SSL

See the Tomcat 7 - SSL How-To docs for help setting up SSL in Apache Tomcat 7.

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Sentinel VoLTE Version 4.0.0