Cisco Cisco Unified Customer Voice Portal 11.0(1)
Servers are not being used, the SIP Service can use DNS directly to distribute VRU legs
among multiple VXML Gateways.
among multiple VXML Gateways.
•
When transferring a call to an agent using a SIP Proxy Server, the SIP Proxy Server can use
DNS to identify the IP address target for that agent. Also, the SIP Service can use DNS to
alternate such requests between the two SIP Proxy Servers. If SIP Proxy Servers are not
being used, then the SIP Service can use DNS to locate the target agent’s IP address.
DNS to identify the IP address target for that agent. Also, the SIP Service can use DNS to
alternate such requests between the two SIP Proxy Servers. If SIP Proxy Servers are not
being used, then the SIP Service can use DNS to locate the target agent’s IP address.
Note that use of the DNS Server for SIP routing is entirely optional in Unified CVP.
Content Services Switch
The Content Services Switch (CSS) is the focus for high availability design in the TCP
(Transmission Control Protocol) arena. The CSS can be placed between one (or more) VXML
Gateways and all its IVR Services, VXML Servers, Media Servers, and ASR/TTS Servers.
Various mechanisms allow it to implement transparent load balancing and failover across these
types of devices.
(Transmission Control Protocol) arena. The CSS can be placed between one (or more) VXML
Gateways and all its IVR Services, VXML Servers, Media Servers, and ASR/TTS Servers.
Various mechanisms allow it to implement transparent load balancing and failover across these
types of devices.
CSS is an optional device, but it comes highly recommended. Without it, the IVR Service
implements a "poor man’s failover" mechanism for up to two of each of the above components,
but they are not load balanced, and various retries and delays are part of the algorithm—all of
which is avoided if CSS is used.
implements a "poor man’s failover" mechanism for up to two of each of the above components,
but they are not load balanced, and various retries and delays are part of the algorithm—all of
which is avoided if CSS is used.
The CSS is normally deployed as a Virtual Router Redundancy Protocol (VRRP) pair. It is
useful in all deployment models except for Call Director call flows.
useful in all deployment models except for Call Director call flows.
Network Monitor
An SNMP management station that can be used to monitor the solution deployment's health.
Prerequisite Tasks
At this point we have presented some of Unified Customer Voice Portal's features, mentioned
that there are various deployment models, presented a typical call flow, and discussed the major
components of a Unified CVP solution.
that there are various deployment models, presented a typical call flow, and discussed the major
components of a Unified CVP solution.
This section indicates tasks that must be performed, or decisions that must be made, before
purchasing and deploying a Unified CVP solution. These should be kept in mind when reading
the rest of this manual.
purchasing and deploying a Unified CVP solution. These should be kept in mind when reading
the rest of this manual.
•
Choose a Deployment model.
–
Choose a Call Flow model.
–
Choose a Geographic model.
Planning Guide for Cisco Unified Customer Voice Portal Cisco Unified Customer Voice Portal 4.1(1)
19
Chapter 1: Product Overview
Prerequisite Tasks