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Chapter 4
Basic and Additional H.323 Services
Setting Up User IDs for the Cisco ATA
Each Cisco ATA can support two FXS ports. You can assign a user ID, which is usually an E.164 phone
number, to each port. Use the Cisco ATA parameter UID0 to configure an ID for the Phone 1 port, and
use the UID1 parameter for the user ID of the Phone 2 port.
Related Configuration Parameters
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Using the Cisco ATA with an H.323 Gatekeeper
The Cisco ATA can function with an H.323 gatekeeper to enable Cisco ATA registration, admission,
and use of directory services on an H.323 network. To use the Cisco ATA with a primary H.323
gatekeeper, you need to configure the GkOrProxy parameter with the IP address assigned to the primary
H.323 gatekeeper. Optionally, you can specify the primary gatekeeper identifier using the GkId
parameter if this identifier is required for the Cisco ATA to successfully register with the H.323
network.
This section contains the following topics:
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Related Configuration Parameters
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Choosing Cisco ATA Registration Mode with an H.323 Gatekeeper
The Cisco ATA can register with an H.323 gatekeeper in one of two modes:
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To configure single-mode registration, you need to set the UseLoginID parameter to 1, and then
configure the LoginID1 and LoginID2 parameters with identical values. The LoginID1 and LoginID2
parameters are used for the H.323 ID, whereas the UID0 and UID1 parameter values are used as E.164
phone numbers.
OL-4804-01
UID0, page 5-16
UID1, page 5-17
Choosing Cisco ATA Registration Mode with an H.323 Gatekeeper, page 4-3
Setting Up Gatekeeper Time-To-Live Value, page 4-4
Setting Up an Alternate H.323 Gatekeeper, page 4-4
Establishing Authentication with Cisco H.323 Gatekeeper, page 4-5
GkOrProxy, page 5-13
GkId, page 5-14
Single registration—Both Cisco ATA FXS ports register at the same time with the H.323
gatekeeper. This reduces gatekeeper registration traffic by 50 percent when both ports are enabled.
Dual registration—Each FXS port registers separately with the H.323 gatekeeper.
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide for H.323 (version 3.0)
Important Basic H.323 Services
4-3
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