Refer to the exhibit. An engineer is troubleshooting an E1 interface module that fails to come up. The E1 module must have these configurations:The linecode type must be Alternate Mark Inversion.The frame type must be Extended Super Frame.All available channels must be used.An engineer already deployed the configurations shown in the exhibit to the Cisco voice gateway. Which additional configurations must be performed to resolve the issue?
Answer(s): A
The configuration provided in the exhibit partially sets up an E1 PRI (Primary Rate Interface) on the Cisco voice gateway. However, to enable the PRI interface fully, the pri-group configuration is required to define the timeslots being used for the E1 interface.The configuration already sets the linecode to AMI (Alternate Mark Inversion) and the framing type to ESF (Extended Super Frame), which are correct for the requirement.An E1 interface uses 31 timeslots (1-31), with timeslot 0 reserved for framing and timeslot 16 used for signaling. The command pri-group timeslots 1-31 is required to enable PRI and use all the available timeslots.The pri-group command is applied under the controller configuration (e.g., controller E1 0/2/0) to define the E1 channel allocation.
Refer to the exhibit. Which two events occur when a transcoder becomes unavailable and a customer calls the representative? (Choose two.)
Answer(s): B,C
This scenario involves a SIP call that requires codec negotiation between a customer (using G.711u via SIP trunk) and a representative (using G.729r8 via CUCM). The Cisco Unified Border Element (CUBE) is expected to provide a transcoding service between incompatible codecs. When the transcoder becomes unavailable, the outcome depends on codec compatibility between the endpoints.
An engineer configures NTP on a Cisco Unified Border Element router to synchronize time with a public NTP server. Which command synchronizes a Cisco UCM server to the CUBE router?
Answer(s): D
The ntp master command configures the Cisco Unified Border Element (CUBE) router to act as an NTP server for other devices, such as a Cisco UCM server. The numeric value (e.g., 2) specifies the stratum level of the CUBE router as an NTP server. Stratum levels indicate the distance of the NTP server from a reference clock (e.g., stratum 1 is directly connected to a reference clock).Why use ntp master 2?By configuring the CUBE as an NTP server (stratum 2 in this case), it allows the Cisco UCM to synchronize time with the CUBE. This setup is common when the CUBE is synchronized with a public NTP server. Setting the stratum level to 2 indicates that the CUBE is synchronized to an external NTP server, providing accurate time to connected devices like Cisco UCM.Accurate time synchronization is critical in VoIP and collaboration environments for features such as call detail records (CDRs), troubleshooting logs, and secure communication (e.g., TLS).
An engineer must add resources to a Cisco Catalyst gateway that is currently used to route calls to and from the PSTN to provide these additional services:conferencing transcodingWhat must be added to the gateway?
Digital Signal Processors (DSPs) are specialized hardware components that handle media processing tasks such as voice compression, echo cancellation, conferencing, and transcoding. By adding DSPs to your Cisco Catalyst gateway, you provide the necessary resources to support these services.
https://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/3_3_3/ccmsys/a05dsp.html
An engineer must configure a voice translation rule on a Cisco voice gateway to truncate numbers down to the last four digits. Which voice translation regex rule must the engineer use?
A voice translation rule on a Cisco voice gateway uses regular expressions (regex) to match and modify numbers. To truncate a number down to its last four digits, the regex pattern must match the entire number and capture only the last four digits for replacement.rule 1 /^.*\(...\)/ /\1/^.*: Matches any leading digits before the last four digits.\(...\): Captures the last four digits in parentheses. The parentheses create a capture group./\1/: Replaces the entire number with the content of the first capture group (the last four digits).
https://www.cisco.com/c/en/us/support/docs/voice/call-routing-dial-plans/61083-voice-transla- rules.html
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