better support for EV-DO AC8700 800 M usbserial modem ??

[ctuxer]

hi everyone ,

i have been using the EVDO AC8700 modem (usbserial) with kernel 2.6.26.2 ,  
it uses the 'option' module along with the generic usbserial module . Well  
i am happy for the improved support for the modem handling in the new  
kernels( like now i don have to modprobe with the vendor and product IDs )  
, there is one point specific to this modem which is still not handled ,  
..... the modem switches between EVDO and CDMA mode when the signal  
strength is low or when there is a bandwidth overload at the vendor's( the  
service provider , bsnl in my case )  tower . This switch in the mode is  
not recognised by the driver and the connection is lost once this  
switching occurs . I have to restart the wvdial program to reconnect .

But if the modem were in CDMA mode when i connect , then the connection is  
not lost when the modem switches back from CDMA to EVDO . I really don  
know enough to understand what is the difference between the two cases or  
what can be done to improve the support for this usbserial modem , ... can  
anyone help ?

Thanks in advance

Satish

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