Cisco Cisco Unified IP Interactive Voice Response (IVR) 8.0(1) Release Note

Use 

 to estimate the number of Cisco Unified CCX agents that can be maintained across the 

WAN (with IP Telephony QoS enabled). These numbers are derived from testing where an entire call 
session to Cisco Unified CCX agents, including G.729 RTP streams, is sent across the WAN. 
Approximately 30% of bandwidth is provisioned for voice. Voice drops are more of an issue when you 
are running RTP in conjunction with Cisco Agent Desktop and other background traffic across the 
WAN. These voice drops might occur with a specific number of agents at a certain link speed, and those 
possible scenarios are denoted by the entry N/A (not applicable) in 

In remote agent deployments, QoS mechanisms should be used to optimize WAN bandwidth utilization. 
Advanced queuing and scheduling techniques should be used in distribution and core areas as well. For 
information on QoS traffic classification, see 

. For 

provisioning guidelines for centralized call processing deployments, refer the Cisco IP Telephony 
Solution Reference Network Design documentation, available online at: 

.

Security can be implemented on many levels. Applications security is clearly dependent upon security 
implemented at the infrastructure level. For more details on security at the network infrastructure level, 
refer the security design considerations in the Cisco IP Telephony Solution Reference Network Design 
documentation, available online at: 

Aside from call routing, Cisco Unified CCX or Cisco Unified IP IVR scripts often process enterprise 
data from existing corporate data stores such as a database or a corporate directory server for functions 
such as account authorization and order status. Often, these data stores already exist and share data with 
other enterprise applications. 

 shows an example of a network where voice and data 

components reside in separate VLANs and are separated by a firewall.

G.729

3

7

15

25

38

G. 711

N/A

N/A

N/A

N/A

14