The IOS of Cisco2811 Router couldn't start up normally due to the flash card was damaged.the IOS is going well after I replaced with a new flash card with ios version:c2800nm-ipvoicek9-mz.124-4.T1.bin in it.
after that,voice phone connected to PBX connected to Router 2811 cann't dial normally.
and the voice phone could dial normally
before the flash card was damaged.
config please refer to attachment