General VoLTE Features

DetermineChargeMode

uses information from the incoming INVITE request to determine whether Ro Online charging should be applied to the session,

DetermineInitialLegNames

uses the Leg Manager to get the names of the original SIP legs established during call set up, and saves the values

Determine International and Roaming Status

determines if the SIP session is roaming and if it represents an international, or international ex HC call, based on the location of the calling party and the destination address

DetermineVoltePlanId

uses information from an incoming INVITE, MESSAGE or SUBSCRIBE request, and from session state to set the plan ID in the Sentinel selection key

DialPlanEnforcement

analyses the request-uri of an originating trigger to determine if the dialed digits match the dial plan

IMSIDLookup

reads Third Party Registration information stored in the HSS as Transparent Data, and writes it into session state.

IMSIDLookupFromCassandraSIP

reads Third Party Registration information stored in the Cassandra Database, and writes it into session state.

IMSIDLookupFromCassandraIN

reads Third Party Registration information stored in the Cassandra Database, and writes it into session state.

IMSUserStateLookupFromHSS

reads the IMS user state from the HSS, and updates session state.

InternationalCallManagement

This feature is responsible for playing an announcement when a subscriber is making an international call. It can also bar an international call (with an optional announcement) if the subscriber does not dial a number in the international format or with an international escape code.

SubscriberDataLookupFromHSS

is responsible for reading data from the HSS and writing it into Sentinel session state fields.

SubscriberDataLookupFromHLR

is responsible for reading subscriber data from the HLR and writing it into Sentinel session state variable fields.

VolteSipAvpCdr

is responsible for building a Call Detail Record that reflects the actions taken whilst processing a session.

VolteNetworkKPI

The VoLTE Network KPI feature (VolteNetworkKPI) increments the "Call Success" and "Post Dial Delay" counters, which you can combine with other stats to gauge network traffic.

SuppressSdpCdr

is a system feature which prevents SDP-change initiated CDRs from being written by the VolteInterimCdr feature for non-roaming Mobile Terminating calls.

VolteInterimCdr

is a system feature that is responsible for writing interim Call Detail Records and/or Diameter Accounting Requests (ACRs) throughout the session.

FeatureCapsManagement

sets values for the Feature-Caps header on outgoing messages based on data from the session’s FeatureCapsManager

SetOcsAnnouncementID

schedules configurable announcements to the subscriber based on Credit-Control-Answers

DetectHoldResume

updates session state when a session’s held status changes

AccessLegTracking

This feature gathers the information required to allow the session tracking system to be used for access transfer procedures.

FetchIMCSI

retrieves CAMEL Subscription Information (CSI) from the HLR for charging purposes

CapLocationHeaders

adds proprietary SIP headers to outbound INVITE requests to allow CAP charging of the session.

VolteLoadServiceConfig

loads service configuration out of a profile and into session state.

StripPreconditions

optionally strips preconditions information from initial INVITEs