Specifications

Chapter 1 Cisco ATA 186 Overview
About Supported Standards and Protocols
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Cisco ATA 186 Installation and Configuration Guide
OL-1267-01
About Supported Standards and Protocols
The following standards are supported on the Cisco ATA 186:
• Network interface: one RJ-45 8-wire connector, IEEE 802.3 10Base-T
standard
• Two RJ-11 FXS standard analog telephone voice ports, up to 5 ringer
equivalency number (REN) per port, depending on loop length
• ITU G.711µ, G.711A, G.723.1 Annex A, and G.729 Annex A voice codecs
• G.723.1 Annex A, voice activity detection (VAD)/comfort noise generation
(CNG): bandwidth saving algorithm
• ITU H.323 V.2 call signaling protocol
• SIP: RFC 2543bis
• LSSGR: Signaling for analog interfaces GR-506-CORE
• RTP: real-time transmission Internet protocol
• ITU-T V.42/V.42bis and MNP2-10 error correction and data compression
• AVT Tones: RFC 2833
• DHCP: RFC 2131