Appendix C Cisco ATA Specifications

 

 

 

Physical Interfaces

 

 

Physical Interfaces

 

 

 

 

 

Table C-4 Physical Interfaces

 

 

 

 

 

 

 

 

 

 

Description

Specification

 

 

 

 

 

 

 

Ethernet

Two RJ-45 connectors, IEEE 802.3 10BaseT standard

 

 

 

 

 

 

 

Analog telephone

Two RJ-11 FXS voice ports

 

 

 

 

 

 

 

Power

5 VDC power connector

 

 

 

 

 

 

 

Indicators

Function button with integrated status indicator

 

 

 

Activity LED indicating network activity

 

 

 

 

 

 

 

Ringing Characteristics

 

 

 

 

 

Table C-5 Ringing Characteristics

 

 

 

 

 

 

 

 

 

 

Description

 

Specification

 

 

 

 

 

 

Tip/ring interfaces for each RJ-11 FXS port (SLIC)

 

 

 

 

 

 

 

Ring voltage

 

40VRMS (typical, balanced ringing only)

 

 

 

 

 

 

 

Ring frequency

 

25 Hz

 

 

 

 

 

 

 

Ring waveform

 

Trapezoidal with 1.2 to 1.6 crest factor

 

 

 

 

 

 

 

Ring load

 

1400 ohm + 40F

 

 

 

 

 

 

 

Ringer equivalence number (REN)

 

Up to 5 REN per RJ-11 FXS port

 

 

 

 

 

 

 

Loop impedance

 

Up to 200 ohms (plus 430-ohm maximum telephone

 

 

 

 

DC resistance)

 

 

 

 

 

 

 

 

On-hook/off-hook characteristics

 

 

 

 

 

 

 

 

 

 

On-hook voltage (tip/ring)

 

–50V

 

 

 

 

 

 

 

Off-hook current

 

27 mA (nominal)

 

 

 

 

 

 

RJ-11 FXS port terminating impedance option

The Cisco ATA186-I1 and Cisco ATA188-I1 provide

 

 

 

 

600-ohm resistive impedance. The Cisco ATA186-I2

 

 

 

 

and Cisco ATA188-I2 provide 270 ohm + 750 ohm //

 

 

 

 

150-nF complex impedance.

 

 

 

 

 

 

 

Software Specifications

 

 

 

 

Table C-6 Software Specifications (All Protocols)

 

 

Description

Specification

 

 

 

 

 

 

Call progress tones

Configurable for two sets of frequencies and single set of on/off

 

 

 

cadence

 

 

 

 

 

 

Dual-tone multifrequency (DTMF)

DTMF tone detection and generation

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

OL-3410-01

 

 

C-3

 

 

 

 

 

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Cisco Systems ATA186I2ARF manual Physical Interfaces, Ringing Characteristics, Software Specifications