Tablet "forgets" USB modem-dongle
I have Telefunken TLF TPC 701 tablet running android 4.0.4 with OTG and Huawei E303 HSPA USB modem-dongle.
It is the HI link modem (It is probably the source of my problem)
Tablet supports this modem but problem is that it takes too long to connect to network. 2 min. and 20 sec. exactly !
Original port settings were: ^SETPORT:A1,A2;1,16,3,2,A1,A2
And I changed it to:^SETPORT: ;1,2 so only modem and PCUI left.
I have noticed that when I turned NCM (NDIS) off , tablet still needed 2 min. and 20 sec to connect but only first time after powering on the tablet.
Next time I connect modem it takes only 30 sec to connect to network.
But after power off or even "sleep" mode tablet just seems to "forget" modem and settings, so again it needs 2 min and 20 sec to establish connection.
After plugin in the modem in folder dev/ , files ttyUSB0 and ttyUSB1 and folder "USB" are created very fast.No problem there.
Modem is using ttyUSB0
I made some progress by disabling NDIS and I tried to disable PCUI too, but modem does not alow it.
Is there any way to disable PCUI port ?????
Any idea why it takes so long to connect the tablet to mobile network using this modem and why it "forgets" modem settings after power off or sleep mode????