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Cisco ATA 187 Analog Telephone Adaptor Administration Guide for SIP (Version 1.0)
OL-21862-01
Chapter 1 Cisco ATA 187 Analog Telephone Adaptor Overview
Software Features
• Domain Name System (DNS)
• Dynamic Host Configuration Protocol (DHCP)
• Internet Control Message Protocol (ICMP)
• Internet Protocol (IP)
• Real-Time Transport Protocol (RTP)
• Transmission Control Protocol (TCP)
• Trivial File Transfer Protocol (TFTP)
• User Datagram Protocol (UDP)
ATA 187 SIP Services
These services include these features:
• IP address assignment—DHCP-provided or statically configured
• ATA 187 configuration by Cisco Unified Communications Manager configuration interface
• VLAN configuration
• Cisco Discovery Protocol (CDP)
• Low-bit-rate codec selection
• User authentication
• Configurable tones (dial tone, busy tone, alert tone, reorder tone, call waiting tone)
• Dial plans
• SIP proxy server redundancy
• Privacy features
• User-configurable, call waiting, permanent default setting
• Comfort noise during silent period when using G.711
• Advanced audio mode
• Caller ID format
• Ring cadence format
• Silence suppression
• Hookflash detection timing configuration
• Configurable onhook delay
• Type of Service (ToS) configuration for audio and signaling ethernet packets
• Debugging and diagnostic tools
Modem Standards
The ATA 187 supports the following modem standards:
• V. 90
• V. 92