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90-71
Cisco Unified Communications Manager Administration Guide
OL-18611-01
Chapter 90 Gateway Configuration
Port Configuration Settings
Channel Selection Order Choose the order in which channels or ports are enabled from first
(lowest number port) to last (highest number port) or from last to
first.
Valid entries include TOP_DOWN (first to last) or BOTTOM_UP
(last to first). If you are not sure which port order to use, choose
TOP_DOWN.
PCM Type Specify the digital encoding format. Choose one of the following
formats:
• a-law: Use for Europe and other countries, except North
America, Hong Kong, Taiwan, and Japan.
• mu-law: Use for North America, Hong Kong, Taiwan, and
Japan.
Delay for First Restart (1/8 sec
ticks)
Enter the rate at which the spans are brought in service. The delay
occurs when many BRI spans are enabled on a system and the
Inhibit Restarts at BRI Initialization check box is unchecked. For
example, set the first five cards to 0 and set the next five cards to 16.
(Wait 2 seconds before bringing them in service.)
Delay Between Restarts (1/8 sec
ticks)
Enter the time between restarts. The delay occurs when a BRI
RESTART gets sent if the Inhibit Restarts check box is unchecked.
Inhibit Restarts at BRI
Initialization
A RESTART message confirms the status of the ports on a BRI
span. If RESTART messages are not sent, Cisco Unified
Communications Manager assumes that the ports are in service.
When the data link successfully connects with another BRI data
link, it sends a RESTART message when this check box is
unchecked.
Enable Status Poll Check the check box to view the B-channel status in the debug
window.
Establish Datalink on First Call Cisco Unified Communications Manager establishes the data link to
the gateway when the gateway registers with Cisco Unified
Communications Manager.
When you configure the gateway and switch to negotiate the TEI
(terminal endpoint identifier) on the first call, you can check the
check box to establish the data link on the first call.
Note Default leaves the check box unchecked.
Table 90-9 BRI Port Configuration Settings (continued)
Field Description