Cisco ATA 186 Administrator's Guide

D-5
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (H.323)
OL-4008-01
Appendix D H.323 Signaling
H.323 Signaling Scenarios
H.323 Endpoint-to-Endpoint Call Setup with a Common Gatekeeper
Figure D-2 illustrates a Cisco ATA initiating a connection to another Cisco ATA that is registered with
the same H.323 gatekeeper. This scenario features registration with no authentication.
Note This scenario assumes that the H.323 configuration employs Slow Start Signaling with tunneling
capability.
Figure D-2 H.323 Endpoint-to-Endpoint Call Setup with a Common Gatekeeper
ARQ
Endpoint 1
Gatekeeper 1
Endpoint 2
ACF/ARJ
Set-Up
72856
Call Proceeding
ARQ
ACF/ARJ
Alerting
Connect
V

Cisco ATA 186 Specifications

General

Operating Temperature	32°F to 104°F (0°C to 40°C)
Protocol	SIP, H.323
Network Interface	10/100BASE-T Ethernet
Audio Codec Support	G.729a, G.723.1
Power Supply	5V DC
Weight	0.23 kg (0.5 lb)
Relative Humidity	10 to 90% noncondensing
Ports	2 RJ-11 FXS ports