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

 

 

 

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Cisco Systems ATA186I2ARF manual Appendix C Cisco ATA Specifications Software Specifications