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Cisco Unity Design Process—Presales

Cisco Unity Design Process—Presales. Understanding the Role of Telephony Components in Cisco Unity Design. What Is the Role of Cisco Unified CallManager (IP) in a Cisco Unity Design?. One Cisco Unity server can service multiple Cisco Unified CallManager clusters.

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Cisco Unity Design Process—Presales

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  1. Cisco Unity Design Process—Presales Understanding the Role of Telephony Components in Cisco Unity Design

  2. What Is the Role of Cisco Unified CallManager (IP) in a Cisco Unity Design? • One Cisco Unity server can service multiple Cisco Unified CallManager clusters. • The Cisco Unity server can be located away from the Cisco Unified CallManager system as long as bandwidth recommendations are followed. • Cisco Unity can be configured in a dual-integration mode and service both Cisco Unified CallManager and a circuit-switched PBX. Cisco Unified CallManagerPublisher Cisco UnifiedCallManagerSubscriber Cisco Unified CallManagerSubscriber Cisco Unified CallManagerPublisher CiscoUnity Server Cluster 1 Cluster 2

  3. The Role of a Circuit-Switched PBX Using DTMF Integration in the Cisco Unity Design CiscoUnity Exchange2000 DC GC DDNS WAN • Location is an issue. • Cisco Unity must be collocated with the circuit-switched PBX using DTMF integration. • Check the appropriate integration guide.

  4. Importance of location in design with circuit-switched PBX using serial or PBXlink integration: Physical location important Physical cable required between Cisco Unity and the PBX Check the appropriate integration guide The Role of a Circuit-Switched PBX Using Serial of PBXlink in the Unity Design

  5. What Is the Role of Cisco SIP Proxy Server in a Cisco Unity Design? • Physical location not an issue for IP connectivity as long as bandwidth recommendations are followed. WAN Cisco SIP Proxy Server Cisco Unity

  6. What Is the Role of Cisco Unity PIMG in a Cisco Unity Design? • Physical location not an issue for IP connectivity as long as bandwidth recommendations are followed. WAN DC GC DDNS CiscoUnity1 Exchange 2000 The Cisco Unity PIMG unit interprets the PBX digital telephone call and integration information into SIP to Cisco Unity.

  7. What Is the Role of a Remote Cisco Unity PIMG in a Cisco Unity Design? • Physical location not an issue for IP connectivity as long as bandwidth recommendations are followed. WAN DC GC DDNS CiscoUnity1 Exchange 2000 The Cisco Unity PIMG unit interprets the PBX digital telephone call and integration information into SIP for Cisco Unity.

  8. Voice-Enabled Gateway Voice Messagingand Applications Call Processing DSP Resources for Conferencing Voice Mailand UnifiedMessaging Cisco UnifiedCallManager Router/Gateway IP WAN DSP PSTN IP Phones orEndpoints PSTN Gateway or Router QoS-Enabled WAN Infrastructure

  9. What Role Does QoS Play in a Cisco Unity Design? • QoS issues in a VoIP network • Several factors can degrade voice quality in a packet-switched voice network: • Packet loss • Excessive delay • Excessive jitter

  10. Summary • Cisco Unity must communicate with a phone switch. IP phone switches, usually Cisco Unified CallManager systems, do not require a physical connection to Cisco Unity; topology issues must be accounted for. • Circuit-switched analog and digital PBXs and key systems require a physical connection to Cisco Unity, unless the Cisco Unity PIMG integration method is used, which then allows the flexibility of a SIP-based integration. • Cisco Unity design engineers are required to have an understanding of auxiliary components of the Cisco Unity server and how they interact with the Cisco Unity application.

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