Please do not consider this a definitive answer, I'm only going on experience, not real facts..
There is no accepted (or more accurately, "implemented") standard for Call Display Name. Only call display number is supported across all carriers. The "Name" portion is often (usually?) dropped when crossing carriers or even between platforms. For example, calling from Bell in Ontario to Bell West in Alberta, the name may or may not make it. Or from land lines to wireless (the name display on cell phones is usually pulled from your address book, not from call display Name). Bottom line, you can't rely on call display name for anything. Regards, John On Mon, Dec 15, 2014 at 10:30 PM, Mark Brown <[email protected]> wrote: > Hi Taug'ers > > Perhaps someone with a telephony background can answer me a question > related to call id. > > If I send a call with id as "Domain.com<905-555-1212>" (domain and number > altered for the purpose of this email)... > My question - is the "dot" in Domain.com a valid character? I also use > mixed case, just like the example (if that matters) > I'm with Primus/Unlimitel here - using an IAX trunk - with the CID being > tweaked by an asterisk 1.8 machine on this end. Basically - this has worked > for years - with no issues that I was aware of... > > I ran into a snag when placing a call to another VoIP ITSP tonight, and > attempting to leave voicemail. The voicemail is recorded successfully, > however I have configured with that ITSP to deliver voicemail as email - > but the target email accounts also happen to be on "Domain.com" and are > never delivered to those email accounts on that domain, when my Calling > number is Primus/Unlimitel. > > Some datapoints: > > * Calls/voicemail from my mobile phone with a with different CID are > sent successfully. Emails successfully delivered. > * I set my CID to be "DomainCom" on Primus/Unlimitel, and I can work > around the problem this way too. Emails successfully delivered. > * If I disable the voicemail to email integration at the other ITSP, > messages are saved on their voicemail server. (no email - but > voicemail waiting...) > > I don't know if it's a goofy regex in their softswitch, voicemail server, > or I'm sending bad data as a part of my CID string. > > I'm trying to rule out the latter.... (but if I'm doing something silly - > I'd like to fix that too...) > > Any ideas on this one? Any documents I could reference? > > Many thanks in advance.... > > /Mark > -- John Lange www.johnlange.ca
