Package com.opencloud.slee.resources.cgin.etsi_inap_cs1

Provides an API for the ETSI INAP CS1 protocol.


This package provides a machine-generated API for the ETSI INAP CS1 protocol. It is organized as an extension of the "callcontrol" pseudo-protocol, with changes for CS1-specific protocol details.

Protocol compliance

This API and underlying implementation is based on the ETSI standard ETS 300 374-1 dated 1994-09 ("ETSI INAP CS1"). In general, it implements only the behavior specified at the network level - i.e. encoding of messages, mapping to TCAP, and so on. Other application-level behavioral requirements, such as management of call state machines, are assumed to be the responsibility of the implementing SLEE service.

Specification implementation notes

  • 4.6 Compatibility mechanisms used for INAP: Supported.
  • 5 Single/Multiple Association Control Function (SACF/MACF) rules: Supported. The behavior described in section 5.2 is the responsibility of the SLEE service, but CGIN provides the necessary primitives to implement this.
  • 6 Abstract syntax of the CS1 INAP: The abstract syntax has been updated to use ASN.1:2002 syntax and information objects. The network-level encoding is unchanged.
  • 7 Application entity procedures: This section is the responsibility of the SLEE service.
  • 8 Error procedures: This section is the responsibility of the SLEE service.
  • 9 Detailed operation procedures: This section is the responsibility of the SLEE service.
  • 10 Services assumed from TCAP: Generally implemented. Some of the behavior of this section is associated with the application-level state machines, and must be implemented by the SLEE service. CGIN provides the necessary primitives to support this.

API packages and identifier prefix

The ETSI INAP CS1 API is divided into these subpackages:

  • com.opencloud.slee.resources.cgin.etsi_inap_cs1 - contains datatype classes and misc helper classes such as CS1Dialog;
  • com.opencloud.slee.resources.cgin.etsi_inap_cs1.metadata - contains metadata classes defining application contexts, operations, and errors;
  • - contains the wrapper SLEE event classes used for notifying services of operation invokes and results;
  • com.opencloud.slee.resources.cgin.etsi_inap_cs1.persist - provides conversion between CGIN data objects of this protocol and Google protobuf (GPB) messages.

In general, all top-level classes and interfaces in these packages begin with a common prefix, CS1, so it is safe to use a wildcard package import without colliding with other protocols.

Dialog Extension Interface

This API defines CS1Dialog, an extension of the callcontrol CCDialog interface that adds convenience methods for dealing with CS1-specific operations, results, and errors. This interface is implemented only on dialogs that actually use ETSI INAP CS1 as their network protocol.