
Originally Posted by
wire
OT:
...too short and very simple question na "how?" but I can answer you on detailed the way to help you out understand the fact about the voice or let's go straight to the point "a caller", suspect ang caller for example. As what you have seen in most of the movies that this is possible, however, i understand that you want me to justify. Will, we are in the world of phoning technology since voice man ang imong pangutana. In fact, kung nakabalo ka na many of the dialing and numbering conventions - dialing "0" for the Operator, dialing "1" for Long Distance, dialing "011" for international, and no area codes or telephone numbers starting with "0" or "1" - directly resulted from the way these switches were designed and wired.
FYI, the telephone network was a hierarchical (5-level) network such as, class 1 (regional center), class 2 (sectional center), class 3 (primary center), class 4 (toll center), and class 5 (local exchange).
So tracing a call in an all electro-mechanical network would literally require working backward from the receiving telephone line, to either the originating line (if the call originated in the same Class 5 office) or to the incoming trunk line, etc., etc. But it wasn't "digit by digit." It would be analagous to following a piece of string to its point of origin, then making a note of the telephone number associated with the tin can the string is tied to, kung mulabang na siya from site to site, ug ara na magsugod ug intercept ang signal thru wireless comm, by means of gps technology., So, it's a matter of Provider to Provider.
Digital switching made billing and services like Caller ID a function of software, not hardware, so tracing a call in an extended service set (ESS) network is much simpler. But steppers and crossbars remained in service well into the 1980s, and many were only replaced because the state Public Service Commission required it.
As to any differences between wireline and wireless: let's ignore the radio-based IMTS and talk about AMPS and digital (GSM, TDMA, CDMA). All of these systems were based on digital switching fabric, and all calls were billed (so calling party number was automatically captured), so tracing a call would have been relatively simple.
One additional distinction: there's a difference between information available in the modern network (billing information, tower ID, GPS coordinates), and information shared with the user (Caller ID).
Just think about the infra of the Call Center wiring system, that's how it goes. Naa ko ani nga idea kay diha ko gikan before.
CLEAR?
ONT:
Now, let's back to the topic, ayaw jud mo ug compyansa ug binuang over the phone kay for sure you will be dead soon kung e-squeeze up jud mo sa taga-NBI! So, better be Watchful guys sa mga things!