350-801 · Question #532
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 correct answer is A. controller E1 0/2/0. 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…
Question
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?
Exhibit
Options
- Acontroller E1 0/2/0
- Bcontroller E1 0/2/0
- Cinterface E1 0/2/0:31
- Dinterface E1 0/2/0:23
How the community answered
(62 responses)- A87% (54)
- B8% (5)
- C2% (1)
- D3% (2)
Explanation
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.
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