20160510

Tue May 10 07:46:06 EDT 2016 Slept from around 10:30 to 6:30. Fifty-eight and showers today. Goals: Work: - Caller ID: CNAM vs CID Done. We may subscribe to OpenCNAM, but the consensus is that it's not a big deal. https://en.wikipedia.org/wiki/Caller_ID In the United States, caller ID information is sent to the called party by the telephone switch as an analogue data stream (similar to data passed between two modems), using Bell 202 modulation between the first and second rings, while the telephone unit is still on hook. If the telephone call is answered too quickly after the first ring, caller ID information will not be transmitted to the recipient. There are two types of caller ID, number only and name+number. Number-only caller ID is called Single Data Message Format (SDMF), which provides the caller's telephone number, the date and time of the call. Name+number caller ID is called Multiple Data Message Format (MDMF), which in addition to the information provided by SDMF format, can also provide the directory listed name for the particular number. In general, CID as transmitted from the origin of the call is only the calling party's full phone number (including area code, and including international access code and country code if it's an international call). The calling party name is added by the consumer's terminating central office if the consumer has subscribed to that service. Calling name delivery is not automatic. A SS7 (or Signalling System 7) TCAP query may be launched by the called party's central office, in order to retrieve the information for Calling Name delivery to the caller ID equipment at the consumer's location, if the caller's name has not already been associated with the calling party's line at the originating central office. To look up the name associated with a phone number, the carrier in some instances has to access that information from a third-party database, and some database providers charge a small[clarification needed] fee for each access to such databases. To avoid such charges, some carriers will report the name as "unavailable", or will report the name as "(city), (state)" based on the phone number, particularly for wireless callers. For toll-free numbers, they may report a string such as TOLLFREE NUMBER if the name is not available in a database. http://support.ooma.com/home/outbound-caller-id-name-cnam-display When you place a call to someone, your caller-ID information will be transmitted with your call to the receiving party. If the person you are calling has caller-ID service, they will see your caller-ID name and number. Generally, the caller-ID number is almost never wrong because the caller-ID number is almost always sent with the call. However, to display the CNAM to the receiving party, the receiving telephone carrier must first look up your CNAM in a database using your phone number. For most phone carriers, there’s a cost associated with either querying a 3rd party CNAM database or keeping their own CNAM database up to date. Some telephone carriers have almost immediate access to the most up to date CNAM information, while others may not have access to this information for several months or longer. Matters are further complicated with carriers having more than 20 different CNAM databases that do not all have the same data. Depending on the location and terminating carrier, certain people you call may correctly see your CNAM while others may not. http://www.n2net.net/agent-blog/3-things-you-probably-didnt-know-about-caller-id The phone number of the caller is “sent” by the phone company (carrier) that originates the call. The Caller ID name is not sent with the number. The name is fetched by the local phone company (carrier) of the person being called. The local phone company of the person being called does what is called a CNAM dip. It’s the “fetching” I was referring to in the second point above. For each call that comes in, the local phone company of the person being called dips into a database (CNAM database) that matches the name registered to the caller's number. The problem is that not all carriers use the same database. There are several CNAM database providers, and the local carrier might subscribe to one or two of these databases, but not all. - Order sd card readers Done. - Read new Microsoft security intel report https://www.microsoft.com/security/sir/default.aspx Done. Twenty minute walk at lunch. Got rained on somewhat. A great blue heron flew over, twice, heading south across 12 Mile and then north again a few minutes later, maybe to the wetlands by Farmbrook. Also saw the usual rock doves, robins, crows, etc. The maples are now fully leaved, while the oaks have barely budded. Home: - Check out M:Tier openup for OpenBSD Done. - Crystal's farewell party at Mr. Joe's Done. Had a blue cheese burger and a Bell's porter. Hung out with the gang. Got home before eight, and took a short walk. - Think more about static site generator Three types of content: - Source files (markdown, txt, html, whatever) - Output files (html) - Cache files (auto-downloaded images and text, stuff that might be hard or impossible to render again on subsequent publishing runs). Cache files are not necessarily ephemeral. We'll have three different but similar directory trees corresponding to each of the above three types. Each directory of the source tree can have its own fluff.rb or knockdown.rb or whatever-we-want-to-call-it.rb script to read the source files and generate output to the output and cache directory trees. Hmm. http://stasis.me/ actually looks interesting.

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