Attached correction for bug preventing Merlin U630 when you had a
network defined.

Notes on configuration (specific to this modem):
* All PPP options MUST be disabled.
* AT+COPS? output for this modem doesn't show the correct network string (only 
needed for devs and people checking syslog).
* NM detects 2 serial ports and shows this modem twice on the list. Only one of 
the serial ports work. Which one works is found out by trial and error (in my 
computer it shows ttyS3 first on boot, and ttyS1 first if I insert the card 
later - only ttyS1 workd). So if one fails, try the other.

Notes on configuration (generic for NM):
* Number is *99 (NM generates the rest for the ATD*99***1# command).
* The safe way is to leave the network field empty (generating an automatic 
registration).

Warning related to this modem:
* You are connecting to the modem using PPP. The modem connection to the 
network is done independently. This means that sometimes you'll find yourself 
connected to the modem before it registered on the network. The result: DNS 
configuration is wrong and you aren't able to acess almost anything on the 
Internet. If your modem is blinking with a green or blue light, just disconnect 
and connect again. If it fails try again.


** Attachment added: "Correction of command to allow manual network choice"
   http://launchpadlibrarian.net/17717834/patch-manual-reg.diff

** Changed in: network-manager (Ubuntu)
       Status: New => Confirmed

-- 
UMTS PCMCIA modem not picked up
https://bugs.launchpad.net/bugs/248630
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