Доброго время суток.
Такая проблема есть cisco2811 и на неё поставили карту VIC2-2FXO в 3слот после чего она неотобразилла voice-port
Router#show run
Building configuration...

Current configuration : 753 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot system flash c2800nm-ipvoice_ivs-mz.124-15.T3.bin
boot-end-marker
!
!
no aaa new-model
!
!
ip cef
!
!
multilink bundle-name authenticated
!
!        
voice-card 0
no dspfarm
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
  hidekeys
!        
!
!
!
!
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
ip forward-protocol nd
!
!
ip http server
!
!        
!
!
control-plane
!
!
!
!
!
!
!
!
!
gatekeeper
shutdown
!
!
line con 0
line aux 0
line vty 0 4
login
!
scheduler allocate 20000 1000
!        
end

Router# show ver
Cisco IOS Software, 2800 Software (C2800NM-IPVOICE_IVS-M), Version 12.4(15)T3, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Thu 24-Jan-08 15:26 by prod_rel_team

ROM: System Bootstrap, Version 12.4(1r) [hqluong 1r], RELEASE SOFTWARE (fc1)
ROM: Cisco IOS Software, 2800 Software (C2800NM-IPBASE-M), Version 12.4(3c), RELEASE SOFTWARE (fc1)

Router uptime is 0 minutes
System returned to ROM by reload at 05:23:17 UTC Fri Apr 30 2010
System image file is "flash:c2800nm-ipvoice_ivs-mz.124-15.T3.bin"

Cisco 2811 (revision 53.50) with 251904K/10240K bytes of memory.
Processor board ID FCZ101571BS
2 FastEthernet interfaces
2 Voice FXO interfaces
DRAM configuration is 64 bits wide with parity enabled.
239K bytes of non-volatile configuration memory.
62720K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2102

Router#show diag
Slot 0:
        C2811 Motherboard with 2FE and integrated VPN Port adapter, 2 ports
        Port adapter is analyzed
        Port adapter insertion time unknown
        EEPROM contents at hardware discovery:
        PCB Serial Number        : FOC10141M99
        Hardware Revision        : 1.0
        Top Assy. Part Number    : 800-26920-01
        Board Revision           : A0
        Deviation Number         : 0
        Fab Version              : 03
        RMA Test History         : 00
        RMA Number               : 0-0-0-0
        RMA History              : 00
        Processor type           : 87
        Hardware date code       : 20060405
        Chassis Serial Number    : FCZ101571BS
        Chassis MAC Address      : 0017.9460.ff28
        MAC Address block size   : 24
        CLEI Code                : CNMJ7P0BRB
        Product (FRU) Number     : CISCO2811      
        Part Number              : 73-10258-03
        Version Identifier       : V02
        EEPROM format version 4
        EEPROM contents (hex):
          0x00: 04 FF C1 8B 46 4F 43 31 30 31 34 31 4D 39 39 40
          0x10: 03 E7 41 01 00 C0 46 03 20 00 69 28 01 42 41 30
          0x20: 88 00 00 00 00 02 03 03 00 81 00 00 00 00 04 00
          0x30: 09 87 83 01 32 18 F5 C2 8B 46 43 5A 31 30 31 35
          0x40: 37 31 42 53 C3 06 00 17 94 60 FF 28 43 00 18 C6
          0x50: 8A 43 4E 4D 4A 37 50 30 42 52 42 CB 8F 43 49 53
          0x60: 43 4F 32 38 31 31 20 20 20 20 20 20 82 49 28 12
          0x70: 03 89 56 30 32 20 D9 02 40 C1 FF FF FF FF FF FF

        WIC Slot 3:
        2nd generation - FXO Voice daughter card (2 port)
        Hardware Revision        : 5.0
        Top Assy. Part Number    : 800-21597-02
        Board Revision           : C0
        Deviation Number         : 9-1595
        Fab Version              : 04
        PCB Serial Number        : FOC11341GSM
        RMA Test History         : 00
        RMA Number               : 0-0-0-0
        RMA History              : 00
        Product (FRU) Number     : VIC2-2FXO
        Version Identifier       : V01
        CLEI Code                : CNUIARTAAA
        EEPROM format version 4
        EEPROM contents (hex):
          0x00: 04 FF 40 00 4D 41 05 00 C0 46 03 20 00 54 5D 02
          0x10: 42 43 30 80 00 09 06 3B 02 04 C1 8B 46 4F 43 31
          0x20: 31 33 34 31 47 53 4D 03 00 81 00 00 00 00 04 00
          0x30: CB 89 56 49 43 32 2D 32 46 58 4F 89 56 30 31 20
          0x40: C6 8A 43 4E 55 49 41 52 54 41 41 41 FF FF FF FF
          0x50: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
          0x60: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
          0x70: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

что и где искать причину?