Note The term Cisco ATA is used throughout this manual to refer to both the Cisco ATA 186 and the Cisco ATA 188, unless differences between the Cisco ATA 186 and Cisco ATA 188 are explicitly stated.
Physical Specifications
Table C-1 Physical Specifications
Description
Specification
Dimensions
1.5 x 6.5 x 5.75 in. (3.8 x 16.5 x 14.6 cm) (H x W x D)
Weight
15 oz (425 g)
Electrical Specifications
Table C-2 Electrical Specifications
Description
Specification
Power
3.5 to 7.5W (idle to peak)
DC input voltage
+5.0 VDC at 1.5A maximum
Power adaptor
Universal AC/DC
~3.3 x 2.0 x 1.3 in. (~8.5 x 5.0 x 3.2 cm)
~4.8 oz (135 g) for the AC-input external power adaptor
~4 ft (1.2 m) DC cord
6 ft (1.8 m) cord
Environmental Specifications
Table C-3 Environmental Specifications
Description
Specification
Operating temperature
41 to 104×F (5 to 40×C)
Storage temperature
-4 to 140×F (-20 to 65×C)
Relative humidity
10 to 90% noncondensing, operating, and nonoperating/storage
Physical Interfaces
Table C-4 Physical Interfaces
Description
Specification
Ethernet
Two RJ-45, IEEE 802.3 10BASE-T standard
Analog telephone
Two RJ-11 FXS voice ports
Power
5 VDC power connector
Indicators
Function button with integrated status indicator
Link and 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 + 40 microF (per line)
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
25 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
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
The term Cisco ATA is used throughout this manual to refer to both the Cisco ATA 186 and the Cisco ATA 188, unless differences between the Cisco ATA 186 and Cisco ATA 188 are explicitly stated.
