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Cisco ICS 7750 System Description
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Chapter 4 Summary of System Software Features
Cisco CallManager
System Capabilities
The following is a summary of Cisco CallManager system capabilities:
• Call routing using Alternate Automatic Routing (AAR), Automated Route
Selection (ARS), and automated bandwidth selection
• Attenuation/gain adjustment per device, comfort noise generation, silence
suppression, and voice activity detection
• Codec support for automated bandwidth selection
• Digit analysis and call treatment, outbound call blocking
• Unified dial plan, dial plan partitioning for multi-tenants and toll restriction
• Distributed call processing
• H.323 interface to selected devices and interface to H.323 gatekeeper for call
admission control
• Hot line and private line, automated ringdown (PLAR)
• Off-premises station (OPX)
• Music on Hold (MOH)
• Hunt groups
• Out-of-band dual tone multifrequency (DTMF) signaling over IP
• Redundancy and automated failover on call-processing failure
• Survivable Remote Site Telephony (SRST)
• Shared resource/application management and configuration for transcoder,
conference bridge
• Simplified North American Numbering Plan (NANP) and non-NANP support
• Third-party applications that support the following:
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Broadcast paging—through Foreign Exchange Station (FXS)
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SMDI for message waiting indication
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Hook-flash support on selected FXS gateways
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TAPI 2.1 (Telephony Applications Programing Interface) service
provider (TSP) interface
