From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============4242485909143661628==" MIME-Version: 1.0 From: Denis Kenzior Subject: Re: Incoming line identity and ALS Date: Mon, 26 Oct 2009 11:53:37 -0500 Message-ID: <200910261153.38050.denkenz@gmail.com> In-Reply-To: <20091026162708.14816kvlcut5xts0@boatman.intrepid.co.uk> List-Id: To: ofono@ofono.org --===============4242485909143661628== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Hi Chris, > > CDIP (like CLIP) is issued after every RING/CRING. Whereas CLIP returns > > the calling line identity, CDIP returns the called line identity (e.g. > > the phone number the remote caller dialed.) According to the > > specification it is not reported for outbound calls. > > It seems that my phone doesn't support CDIP, although it does support > line-2/ALS which is a bit odd. I'll investigate more on that.. Many Phase 2+ devices only supported ALS and the rest of the CPHS standards= . = CPHS was largely merged into the 3G GSM standards. If you're interested, = google Common PCN Handset Specification. This is where ALS comes from. > > One thing I'm not certain about is whether CDIP would report which > line received the call, or which number the calller dialed as they > could be different. I know other areas deal with routing information, > but I wasn't sure which which number CDIP reported. It would be great > for ALS support if it were the line that received the call, rather > than the number dialed by the caller.. though that could be > interesting in other situations. This is entirely up to the network. The likely scenario is that the networ= k = will normalize the number according to the network's rules. While this sou= nds = nice, it can still lead to some ambiguities. E.g. in the US the following = numbers (as presented in CLIP) are equivalent: "15556677", 129 "15556677", 145 "5556677",129 > I'll do more investigation and try and come back with something more > constructive Sounds good. Regards, -Denis --===============4242485909143661628==--