Final Design and Implementation Developing a Low-Level Design

Low-Level Design Definition Draws input from the high-level design Analyzes specific configuration tasks Provides direction to project participants Creates one document for small installations Creates multiple documents for large installations Used as basis for implementation plan Becomes the sign-off document

Low-Level Design—Cisco Unity System Description Document these Cisco Unity system components: All Cisco Unity system configurations in detail Cisco Unity physical hardware configurations Cisco Unity switch integration detail Cisco Unity networking and subscriber addressing scheme Physical network connectivity

Low-Level Design–Cisco Unity Network and Messaging Infrastructure Detail Document these Cisco Unity integration components: Cisco Unity domain usage (depending on which messaging servers are used) Cisco Unity directory usage, including schema extension or Lotus DUCs installation Name resolution hosts Service accounts and access in detail End-user access to Cisco Unity and to the infrastructure Any special security considerations discovered during the planning phase

Low-Level Design–Administration and Management Document the administration plan. Who will maintain accounts, users, and servers? Plan for and document the system management standards. Document the subscriber naming convention. Document the support plan, contact personnel, and escalation procedure for each phase of the project.

Summary Low-level design adds all detail necessary to give a clear direction to all project participants. Document Cisco Unity hardware, software, and network configurations in a Cisco Unity system description. Document each Cisco Unity integration with the infrastructure. Document the administration, system management, and support plans for both implementation and operation.