Cisco Cisco Unified Contact Center Enterprise 8.5(1) Notas De La Versión
Chapter 2 Deployment Models
Cisco Unified Contact Center Enterprise 8.x SRND
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contact center calls around the local contact center calls. For example, suppose you have a two-site
deployment where Site 1 currently has all agents busy and there are many locally-originating calls in the
queue. Site 2 has only a few calls in the queue or maybe even a few agents are currently available. In this
scenario, you could have Unified ICM instruct the toll-free provider to route most or all of the toll-free calls
to Site 2. This type of multisite load balancing provided by Unified ICM is dynamic and automatically
adjusts as call volumes change at all sites.
deployment where Site 1 currently has all agents busy and there are many locally-originating calls in the
queue. Site 2 has only a few calls in the queue or maybe even a few agents are currently available. In this
scenario, you could have Unified ICM instruct the toll-free provider to route most or all of the toll-free calls
to Site 2. This type of multisite load balancing provided by Unified ICM is dynamic and automatically
adjusts as call volumes change at all sites.
Just as in the two previous deployment models, much variation exists in the number and types of Unified
ICM/CCE, Unified CM, and Unified IP IVR or Unified CVP servers; LAN/WAN infrastructure, voice
gateways, PSTN connectivity, and so forth.
ICM/CCE, Unified CM, and Unified IP IVR or Unified CVP servers; LAN/WAN infrastructure, voice
gateways, PSTN connectivity, and so forth.
Advantages of Using Distributed Voice Gateways
• Only limited systems management skills are needed for the remote sites because most servers,
equipment, and system configurations are managed from a centralized location.
• Unified CVP or Unified ICM/CCE pre-routing can be used to load-balance calls across sites
including sites with local PSTN trunks in and toll-free PSTN trunks.
• No WAN RTP traffic is required for calls arriving at each remote site that are handled by agents at
that remote site.
• Unified CVP provides call treatment and queuing at the remote site using the VoiceXML Browser
in Cisco IOS on the voice gateway itself, thus eliminating the need to move the call over the VoIP
WAN to a central queue and treatment point.
WAN to a central queue and treatment point.
Best Practices
• The Unified IP IVR or Unified CVP, Unified CM and PGs (for both Unified CM and IVR or
Unified CVP) are co-located. In this model, the only Unified CCE communications that can be
separated across a WAN are the following:
separated across a WAN are the following:
–
Unified Central Controller to PG
–
PG to Unified CCE Agent Desktops
–
Unified CM to voice gateways
–
Unified CM to phones
–
Unified CVP Call Control Server to remote voice gateway (call control)
• If calls are not going to be restricted to the site where calls arrive, or if calls will be made between
sites, more RTP traffic will flow across the WAN. It is important to determine the maximum
number of calls that will flow between sites or locations. Unified CM locations-based call
admission control failure will result in a routed call being disconnected (rerouting within Unified
CM is not currently supported). Therefore, it is important to provision adequate bandwidth to the
remote sites and appropriately designed QoS for the WAN is critical. Calls that are treated by IP
IVR at the central site must also be considered.
number of calls that will flow between sites or locations. Unified CM locations-based call
admission control failure will result in a routed call being disconnected (rerouting within Unified
CM is not currently supported). Therefore, it is important to provision adequate bandwidth to the
remote sites and appropriately designed QoS for the WAN is critical. Calls that are treated by IP
IVR at the central site must also be considered.
Note
For calls controlled by Unified CVP, call admission control failures can be recovered with the
proper Unified CCE Scripting configuration with the Unified CCE Router Re-query feature
enabled.
proper Unified CCE Scripting configuration with the Unified CCE Router Re-query feature
enabled.
• H.323, SIP, or MGCP signaling traffic between the voice gateways and the centralized Unified
CM servers will flow over the WAN. Proper QoS implementation on the WAN is critical and