gsm muxing and GPRS: am i missing something?
madhatter at teaparty.net
Sun Aug 31 10:38:47 CEST 2008
i've pretty much got this working under 2008.08, following various wiki
and other writeups, for which many thanks to the authors.
my writeup's at http://www.teaparty.net/technotes/openmoko-2.html#GPRS ,
if anyone's interested; i went for "with GSM multiplexing but without a
i can make a GPRS connection. when it's up, i can place a call, and the
outgoing GPRS connection temporarily suspends. when it's up, incoming
calls go straight to voicemail; the phone doesn't even give me the choice
of accepting the call.
my understanding from the wiki was that "GSM multiplexing allows both a
GPRS connection and a phone call to be handled at the same time". so i'd
sort of assumed that i could still take an incoming call, even if that
would temporarily suspend the GPRS connection.
so: have i misunderstood completely? is the MUXing simply about sharing
access to the modem, rather than the "line" (ie, connection between modem
and network) as well? or should i be able to take an incoming call while
the GPRS is up? and if so, should the GPRS suspend while i do, or should
i be able to run them both simultaneously?
before i start trying to find out *how* to configure pppd to do what i
want, i'd like to know if the phone is capable of it! i'd very much
appreciate any ideas or insights anyone has on this.
Tom Yates - http://www.teaparty.net
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