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Cisco Unified Communications Manager Administration Guide
OL-18611-01
Chapter 90 Gateway Configuration
Gateway Configuration Settings
SRTP Allowed Check the SRTP Allowed check box if you want Cisco Unified
Communications Manager to allow secure and nonsecure calls over the
gateway.
If you do not check this check box, Cisco Unified Communications
Manager prevents SRTP negotiation with the gateway and uses RTP.
Caution If you check this check box, Cisco strongly recommends that
you configure IPSec, so you do not expose keys and other
security-related information during call negotiations. If you
do not configure IPSec correctly, signaling between Cisco
Unified Communications Manager and the gateway is
nonsecure.
For more information on encryption for gateways, refer to the Cisco
Unified Communications Manager Security Guide.
H.235 Pass Through Allowed This feature allows Cisco Unified Communications Manager to
transparently pass through the shared secret (Diffie-Hellman key) and
other H.235 data between two H.235 endpoints, so the two endpoints
can establish a secure media channel.
To allow H.235 pass through, check the check box.
Multilevel Precedence and Preemption (MLPP) Information
MLPP Domain From the drop-down list box, choose an MLPP domain to associate
with this device. If you leave the value <None>, this device inherits its
MLPP domain from the value that was set for the device pool of the
device. If the device pool does not have an MLPP Domain setting, this
device inherits its MLPP domain from the value that was set for the
MLPP Domain Identifier enterprise parameter.
MLPP Indication This device type does not have this setting.
MLPP Preemption This device type does not have this setting.
Call Routing Information - Inbound Calls
Significant Digits Significant digits represent the number of final digits that are retained
on inbound calls. Use for the processing of incoming calls and to
indicate the number of digits that are used to route calls coming into the
device.
Choose the number of significant digits to collect, from 0 to 32. Cisco
Unified Communications Manager counts significant digits from the
right (last digit) of the number called.
Table 90-2 H.323 Gateway Configuration Settings (continued)
Field Description