CDMA Modem Anydata MV110H - must connect modem when it is off be be able to connect network

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What steps will reproduce the problem?
1. Install WL500gpv2-1.9.2.7-rtn-r3497.trx into ASUS WL-500gp V2
2. Configure login data for modem
3. Power on CDMA modem
4. Insert modem into USB port

What is the expected output? What do you see instead?
In log accessed via web interface expected to see modem is connected, but it 
says "connecting" only and connection is not established and it hangs until 
modem is manually removed. 
Workaround: Remove modem from USB port, power it off, connect to USB port 
again. Modem is going to ON by itself and router establishes connection. This 
workaround is not a solution.

What version of the product are you using?
Anydata MV110H Modem 
WL500gpv2-1.9.2.7-rtn-r3497.trx and ASUS WL-500gp V2

Please provide any additional information below.

Communication with this CDMA modem sometimes (each few days) freezes and modem 
needs to be removed from router, powered off manually, and again when off needs 
to be inserted into router USB port in order connection is re-established. This 
is also considered as bug.

Original issue reported on code.google.com by ondrej.b...@gmail.com on 29 Nov 2011 at 10:01

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Looks that router is unable to create USB device after restart in case modem 
remained pluged to router.

Calling CDMA/EVDO
Failed
Script /tmp/ppp/peers/wan0_chat.sh finished (pid 416), status = 0x3
Connect script failed
Calling CDMA/EVDO
Failed
Script /tmp/ppp/peers/wan0_chat.sh finished (pid 459), status = 0x3
Connect script failed
Failed to open /dev/ttyUSB0: No such file or directory

Original comment by ondrej.b...@gmail.com on 30 Nov 2011 at 12:06

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Issue 280 has been merged into this issue.

Original comment by rssdev10@gmail.com on 30 Nov 2011 at 5:06

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There are several reasons of this problem. Unfortunately modern usb-modems are 
not reliable. There are bugs in it firmware, bad hardware or incorrect wireless 
protocol processing because of noisy signal. We can’t make anything with 
hanged usb-device because power shutoff is needed.

You may test hub-ctrl utility with external usb hub that supports a power 
control for the concrete usb-port. But it is without any guaranty too.

Original comment by rssdev10@gmail.com on 30 Nov 2011 at 5:22

• Changed state: Accepted
• Added labels: Type-Support
• Removed labels: Type-Defect

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But hold, I found there is a solution after some more of testing. At least for 
first part of the problem. 

If you set in services page USB support to 1.1 only and disable mass storage 
support, then you router can reboot and CDMA connection is auto established 
well. This was not working before. So at least modem should be working with 
full USB support enabled or it should be documented to avoid people will stack 
on this. 

I was lucky to discover this.

Original comment by ondrej.b...@gmail.com on 6 Dec 2011 at 8:00

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Further findings: Looks modem does not hang up and problem above is not 
observed if USB 2.0 support is disabled and Mass Storage support is disabled 
too.

Original comment by ondrej.b...@gmail.com on 12 Dec 2011 at 11:36

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Original comment by lly.dev on 31 Mar 2012 at 7:37

• Changed state: Fixed