I am blind idiot, trying load Gobi2000 firmware to Gobi1000 device. Now it's OK. Two ttyUSB* devices has appeared and connecting via "microcom".
ATI
Manufacturer: QUALCOMM INCORPORATED
Model: 88
Revision: D1020-SUUAASGA-4352 1 [Apr 14 2008 19:00:00]
IMEI: 980049004712890
+GCAP: +CGSM,+DS
After testing this modem, i'll post here gobi_loader extension for Gobi1000.