From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============4184310186383322668==" MIME-Version: 1.0 From: Lei Yu Subject: Re: [PATCH] doc: Add modem Type property Date: Fri, 21 Jan 2011 12:48:47 -0800 Message-ID: <4D39F12F.2040208@nokia.com> In-Reply-To: <4D39E972.5060305@gmail.com> List-Id: To: ofono@ofono.org --===============4184310186383322668== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Hi Denis, On 01/21/2011 12:15 PM, ext Denis Kenzior wrote: > Hi Dara, > > On 01/20/2011 04:48 PM, Dara Spieker-Doyle wrote: >> Add support for providing the type of the attached modem device >> including GSM (3GPP), CDMA (3GPP2) and Bluetooth HFP. >> --- >> doc/modem-api.txt | 13 +++++++++++++ >> 1 files changed, 13 insertions(+), 0 deletions(-) >> >> diff --git a/doc/modem-api.txt b/doc/modem-api.txt >> index 45043b0..fe806c8 100644 >> --- a/doc/modem-api.txt >> +++ b/doc/modem-api.txt >> @@ -82,6 +82,19 @@ Properties boolean Powered [readwrite] >> >> This is usually obtained by using the +CGSN AT command. >> >> + string Type [readonly, optional, experimental] >> + >> + String representing the type of the modem device. >> + >> + The possible values are: >> + "gsm" Modem supports one or more of the 3GPP >> + family of technologies including GSM, >> + EDGE, UMTS, HSPA, LTE. >> + "cdma" Modem supports one or more of the 3GPP2 >> + family of technologies including CDMA 1x, >> + EVDO. >> + "hfp" Bluetooth hands-free profile (HFP) modem >> + > > So one pointed question: > > How are we planning to support dual-mode devices with this property? I > believe during the CDMA workshop we decided that the clients should > simply look at the set of interfaces, not a semi-static property... We understand that the decision during the CDMA workshop but as we = explained one use case in the cover letter = (http://lists.ofono.org/pipermail/ofono/2011-January/007890.html) for = this RFC, there will be cases where atom's D-Bus I/F is not suitable (or = as a reliable way) for telling what is current mode (CDMA or GSM). E.g., = in the case of retrieving serial number from modem. Currently both CDMA = and GSM shares the same I/F (ofono.org.modem) rather than having = separate (ofono.org.cdma.modem). And, further if no other atom has been = instantiated, then, there will be no other way to tell which mode (CDMA = or GSM) the modem is. And, further for displaying serial number, upper = layer will need to know it is CDMA or GSM. In case of CDMA, the serial = number is MEID and GSM it is IMEI. As explained in cover letter, we = anticipate more cases like this. > > Regards, > -Denis > _______________________________________________ > ofono mailing list > ofono(a)ofono.org > http://lists.ofono.org/listinfo/ofono Regards Lei --===============4184310186383322668==--