On Tue, Apr 26, 2011 at 10:16 PM, Marcel Holtmann <[email protected]>wrote:
> Hi Ran, > > > > > I am using a device with one port for both data and connection > (MC950D > > > > novatel), and it is interesting that after connecting with kppp I can > see > > > in > > > > the kppp properties (after pressing "details" button) a window of > "kppp > > > > statistics", which shows number of transmit/received packets. does it > > > mean > > > > that the kppp send AT command while in ppp connection ? > > > > > > the second port of the MC950D is by default in QCDM mode. You can send > > > AT$NWDMAT=1 to the first AT command channel and turn the second TTY > also > > > into an AT command channel. > > > > I did not find in the MC950D datasheet that it has any second port, > which > > you said as being used for QCDM. > > Where did you read about it ? > > don't remember, but my MC950D shows up with two TTY devices. > > > > Network statistics are a different story - you're not querying the > modem > > > for those; you're querying the ppp interface. The Linux kernel keeps > track > > > of the network flowing over that interface. If you run 'ifconfig', > you'll > > > likely see ppp0 as a network interface, complete with statistics. > > > > > > > > > > > If the statistics can be queried from the ppp interface, it gets me > closer > > to the idea that AT commands are not used while in ppp connection, but I > > now see that this device (MC950D ) can send/recieved SMS message (which I > > think is only done using AT command). I see that in the Mobilink > application > > (which is used with the MC950D in windows), and I also tried it and it > > works. > > You really want the second AT command channel for network status updates > and especially if you wanna do extra things like SMS sending. > > Regards > > Marcel > Hello, You were right that MC950D has two ports and one can be used for data while the other can be used for control. It is strange that such thing was not documented anywhere. Thank you very much, Ran
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