After updating to 10.3.5 and install two versions of security updates I detected problem with modem, it doesn't detect dial tone after sleep mode.
PowerBook Modem Information:
Modem Model: LastDash
Firmware Version: APPLE VERSION 2.6.3
Country: B4 (United Kingdom)
Driver: InternalUSBModem.kext (v2.6.3)
Interface Type: USB
SKU Name: Euro
Modulation: V.92
Hardware Version: 4.0
iBook Modem Information:
Modem Model: MicroDash
Firmware Version: APPLE VERSION 2.6.3
Country: 0 (Japan)
Driver: InternalUSBModem.kext (v2.6.3)
Interface Type: USB
SKU Name: UCJ
Modulation: V.92
Hardware Version: 1.0F