The TMF403 – Interface Implementation Specification (IIS) template is packaged within a single zip file titled TMF403_IIS-Template.zip. 

This zip file contains 2 documents:

• The first is TMF403-Inst_IIS_Template_V#-#_yymmdd, (this document) which is the guide or instruction part of the template explaining how and when to use the template. It also contains a document history of changes to the template.
• The second document is TMF403_IIS_Template_V#-#_yymmdd which is  the actual template to be used. This should be populated with the content of the actual IIS being produced, and headers/footers/titles/etc should be filled in appropriately.

TM Forum Interface Implementation Specifications (IIS) provide the definition of interfaces among the member company elements of a Catalyst Solution. Interface Implementation Specifications are developed and issued by Catalyst project teams to document what the project did and how it was done. An Interface Implementation Specification should allow someone picking up the document to create a similar implementation. Interface Implementation Specifications include definition of the business problem addressed, the business process(es) involved, an abbreviated business requirements model, an information model, the technical solution and protocol specific implementation.

The IIS template can and should be used to make certain that the needed sections are provided, and that the format conforms to the TM Forum standard.

Document TMF857, NGOSS through XML, can be used as an example, as to how this template should be completed, or alternatively contact the TMF Staff Member assigned to your team.