Cisco CMTS uBr10012 can't remote login throught telnet

Dear All,

I have a problem as title. But it only happen after I boot the CMTS uBr10012 a while and I can ping the IP CMTS have.

Below is my CMTS IOS version. Does anyone have the same problem on CMTS uBr10012?

If you need more data to this problem, please feel free to discuss.

Many thanks

Cisco IOS Software, 10000 Software (UBR10K4-K9P6U2-M), Version 12.2(33)SCI3, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Wed 16-Dec-15 21:03 by prod_rel_team

ROM: System Bootstrap, Version 12.2(31r)SB13, RELEASE SOFTWARE (fc1)

Cisco_10K uptime is 2 days, 1 hour, 23 minutes
Uptime for this control processor is 2 days, 1 hour, 23 minutes
System returned to ROM by power-on
System image file is "disk0:ubr10k4-k9p6u2-mz.122-33.SCI3.bin"
Last reload type: Normal Reload

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third-party authority to import, export, distribute or use encryption.
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Cisco uBR10000 (PRE4-RP) processor (revision V02 ) with 2588671K/163839K bytes of memory.
Processor board ID SPE1651006R
SB-1 CPU at 800Mhz, Implementation 0x410, Rev 5.0, 512KB L2 Cache
Backplane version 1.1, 8 slot

Last reset from power-on
PXF processor tmc0 is running.
PXF processor tmc1 is running.
PXF processor tmc2 is running.
PXF processor tmc3 is running.
2 DTCC card(s)
2 Jacket card(s): 2 SPA card(s)
1 FastEthernet interface
10 Gigabit Ethernet interfaces
15 Cable Modem interfaces
7039K bytes of non-volatile configuration memory.

126000K bytes of ATA compact flash in bootflash (Sector size 512 bytes).
1000944K bytes of ATA compact flash in disk0 (Sector size 512 bytes).
Standby is up
Standby has 2752512K bytes of memory
Configuration register is 0x2102