Cisco Cisco Unified Contact Center Enterprise 8.5(2) Leaflet

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Cisco Unified Contact Center Enterprise 7.5 SRND
Chapter 2      Deployment Models
IPT: Single Site
This system can be installed using the traditional Unified CCE model (not Unified System CCE), which 
would allow for several different options. For example, two Unified CCE System PGs could be installed 
along with a single Unified CVP.
Unified System CCE or traditional Unified CCE must be deployed in a redundant fashion. Simplex 
deployments are supported only for lab or non-production deployments. For information on Unified 
CCE redundancy, see to the chapter on 
.
The number of Unified CM nodes and the hardware model used is not specified along with the number 
of Unified IP IVRs. For information on determining the number and type of servers required, refer to the 
chapter on 
Also not specified in this model is the specific data switching infrastructure required for the LAN, the 
type of voice gateways, or the number of voice gateways and trunks. Cisco campus design guides and 
Cisco Unified Communications design guides are available to assist in the design of these components. 
The chapter on 
, discusses how to determine the number of 
gateway ports.
Another variation in this model is to have the voice gateways connected to the line side of a PBX instead 
of the PSTN. Connection to multiple PSTNs and a PBX all from the same single-site deployment is also 
possible. For example, a deployment can have trunks from a local PSTN, a toll-free PSTN, and a 
traditional PBX/ACD. For more information, see 
, and 
.
This deployment model also does not specify the type of signaling (ISDN, MF, R1, and so on) to be used 
between the PSTN and voice gateway or the specific signaling (H.323 or MGCP) to be used between the 
voice gateway and Unified CM.
The amount of digital signal processor (DSP) resources required for placing calls on hold, consultative 
transfers, and conferencing is also not specified in this model. For information on sizing of these 
resources, refer to the latest version of the Cisco Unified Communications Solution Reference Network 
Design (SRND)
 guide, available at 
The main advantage of the single-site deployment model is that there is no WAN connectivity required. 
Given that there is no WAN in this deployment model, there is generally no need to use G.729 or any 
other compressed Real-Time Transport Protocol (RTP) stream, so transcoding would not be required.
Unified CCE: Unified CCE System PG
In this deployment model, the agent PG that is deployed is a Unified CCE System PG. Only a single 
peripheral is needed to handle both the Unified CM and any Unified IP IVRs that may exist. This 
peripheral unifies the appearances of the multiple PIMs and also handles load balancing calls between 
multiple Unified IP IVRs. Alternatively, this model may be configured to use Unified CVP. When 
Unified CVP is used, its connectivity to Cisco Unified Presence handles load balancing by distributing 
the incoming calls among Unified CVP Call Servers. In this deployment, the VRU PIMs (up to 10) 
communicating with the Unified CVP Call Server(s) reside on their own PG and not under the 
Unified CCE System PG. 
 shows a single-site deployment utilizing Unified CVP instead of 
IP-IVR in a Unified System CCE system. In this model, no longer do all calls reside under a single 
peripheral; Unified CVP is its own peripheral(s).