Physical Interfaces; Ringing Characteristics; Software Specifications - Cisco ATA 188 Administrator's Manual

Appendix C Cisco ATA Specifications

Physical Interfaces

Table C-4
Description
Ethernet
Analog telephone
Power
Indicators

Ringing Characteristics

Table C-5
Description
Tip/ring interfaces for each RJ-11 FXS port (SLIC)
Ring voltage
Ring frequency
Ring waveform
Ring load
Ringer equivalence number (REN)
Loop impedance
On-hook/off-hook characteristics
On-hook voltage (tip/ring)
Off-hook current
RJ-11 FXS port terminating impedance option

Software Specifications

Table C-6
Description
Call progress tones
Dual-tone multifrequency (DTMF)
OL-3141-01
Physical Interfaces
Specification
Two RJ-45, IEEE 802.3 10BASE-T standard
Two RJ-11 FXS voice ports
5 VDC power connector
Function button with integrated status indicator
Link and activity LED indicating network activity
Ringing Characteristics
Software Specifications (All Protocols)
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide (SCCP)
Specification
40V (typical, balanced ringing only)
RMS
25 Hz
Trapezoidal with 1.2 to 1.6 crest factor
1400 ohm + 40 microF (per line)
Up to 5 REN per RJ-11 FXS port
Up to 200 ohms (plus 430-ohm maximum telephone
DC resistance)
–50V
25 mA (nominal)
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.
Specification
Configurable for two sets of frequencies and single set of on/off
cadence
DTMF tone detection and generation
Physical Interfaces
C-3