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Chapter 4
Protocol-Specific Configurations
Step 6
Step 7
Step 8
About Alternate Gatekeepers and RAS
About SIP-Specific Configurations
OL-1267-01
Set PWD0 and PWD1 to the correct passwords/PINs (passwords for RADIUS
servers).
Set AUTMETHOD to 1 or 2 (0 indicates no authentication; 1 indicates Cisco
Registration Level Security; 2 indicates Cisco Admission Level Security).
If the DHCP server does not provide an IP address, set NTPIP to the NTP server
IP address.
You can configure and accept acknowledgements from up to four Alternate
(backup) Gatekeepers (AltGK).
The Cisco ATA 186 allows you to configure an Alternate Gatekeeper as a backup
to the primary Gatekeeper. The Cisco ATA 186 can accept up to four dynamic
Alternate Gatekeepers configured by the H.225 RAS messages. It accepts both
temporary and permanent Alternate Gatekeepers.
When an Alternate Gatekeeper list is received with an H.225 RAS message, the
secondary Gatekeeper is merged and sorted with the dynamic Alternate
Gatekeepers. The secondary gatekeeper is kept and placed with the lowest
priority. To allow the Cisco ATA 186 to switch back to the primary gatekeeper
automatically, set a timeout value in seconds, AltGkTimeOut, to enable the
feature if non-zero value is used. The Cisco ATA 186 supports the Alternate
Gatekeeper list in the GCF/GRJ, ACF/ARJ, RCF/RRJ, and DRJ RAS messages.
See
Appendix B, "Parameters and Defaults"
The Session Initiation Protocol (SIP) is a text-based IETF-defined protocol for
establishing call sessions. To enable SIP on the Cisco ATA 186, you must set the
UseSIP configuration parameter to 1.
Session Description Protocol (SDP) is the part of the SIP message that establishes
parameters.
If you are using SIP, you must register with a proxy server. If you do not
remember the IP address, you can use the UserID, that is, the telephone number.
About Alternate Gatekeepers and RAS
for more information.
Cisco ATA 186 Installation and Configuration Guide
4-5
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Table of Contents
Troubleshooting
