Cisco Systems ATA186I2ARF manual Appendix C Cisco ATA Specifications Software Specifications

Appendix C Cisco ATA Specifications

Software Specifications

Table C-6 Software Specifications (All Protocols) (continued)

Description	Specification
Fax	G.711 fax pass-through and G.711 fax mode.
	Enhanced fax pass-through is supported on the Cisco ATA.
	Success of fax transmissions up to 14.4 kbps depends on
	network conditions, and fax modem/fax machine tolerance to
	those conditions. The network must have reasonably low
	network jitter, network delay, and packet-loss rate.
Line-echo cancellation		•	Echo canceller for each port
		• 8 ms echo length
		• Nonlinear echo suppression (ERL > 28 dB for frequency
			= 300 to 2400 Hz)
		• Convergence time = 250 ms
		• ERLE = 10 to 20 dB
		• Double-talk detection
Out-of-band DTMF		•	H.245 out-of-band DTMF for H.323
		• RFC 2833 AVT tones for SIP, MGCP, SCCP
Configuration		•	DHCP (RFC 2131)
		• Web configuration via built-in Web server
		• Touch-tone telephone keypad configuration with voice
			prompt
		• Basic boot configuration (RFC 1350 TFTP Profiling)
		•	Dial plan configuration
		•	Cisco Discovery Protocol
Quality of Service		•	Class-of-service (CoS) bit-tagging (802.1P)
		• Type-of-service (ToS) bit-tagging
Security		•	H.235 for H.323
		• RC4 encryption for TFTP configuration files
Voice coder-decoders (codecs)
	Note			In simultaneous dual-port operation, the second port is
				limited to G.711 when using G.729.
		•	G.723.1
		•	G.729, G.729A, G.729AB
		•	G.723.1
		•	G.711A-law
		•	G.711µ-law

Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SIP)

C-4 OL-3410-01