HP MSR Router Series - Troubleshooting; Symptom; Solution

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# Channelize the cellular interface into an Eth-channel interface.
[Router] controller cellular 2/4/0
[Router-Cellular2/4/0] eth-channel 0
[Router-Cellular2/4/0] quit
# Configure an IP address for Eth-channel 2/4/0:0.
[Router] interface eth-channel 2/4/0:0
[Router-Eth-channel2/4/0:0] ip address cellular-alloc
# Enable traditional DDR on Eth-channel 2/4/0:0.
[Router-Eth-channel2/4/0:0] dialer circular enable
# Associate Eth-channel 2/4/0:0 with dialer group 1.
[Router-Eth-channel2/4/0:0] dialer-group 1
# Set the interval for DDR to make the next call attempt to 5 seconds.
[Router-Eth-channel2/4/0:0] dialer timer autodial 5
# Configure the dial string for placing calls as 666666.
[Router-Eth-channel2/4/0:0] dialer number 666666
Troubleshooting
Symptom
A 3G/4G modem fails to function correctly. For example, the 3G/4G modem receives no signals or fails
to connect to service providers' networks.
Solution
To resolve the problem:
1. Execute the shutdown command and the undo shutdown command on the cellular interface.
2. If the 3G/4G modem still fails to function, execute the modem reboot command on the cellular
interface.
3. If the problem persists, contact HP Support.