Re: Serial Number Psim 9
Berry Spitsberg
We are excited to provide Dual SIM options to our Nex-Tech Wireless customers! DUAL SIM gives customers the option to have two phone numbers loaded in the same handset. This would most frequently be used or requested by those customers who have a Personal phone number and a Business phone number. This will help eliminate people having to have two separate phones as each SIM can have a different phone number tied to it. The numbers can be on different accounts, or even with different carriers!
Another great use for dual SIM is international travel. While NTW does have partnerships to allow roaming in various countries, the option to download an international eSIM for your destination can be a cost saver! For full details about options while traveling abroad, visit : -techwireless.com/support/international-calls-and-messaging.
Up until now, most devices had a physical SIM card or pSIM. This is a little piece of technology that is physically added to the device to provide service. While most current devices still include the slot for the pSIM, newer devices are also including an electronic SIM or eSIM that is already built into the device and can be programmed to function just like the pSIM would. In some cases, devices are exclusively using eSIM. Either way, the introduction of eSIM now makes Dual SIM possible.
As of now:
I have a zflip (physical sim) and an iphone 14 (esim). I put the physical sim card into my zflip and it detects all the contacts saved in it; however, no phone/internet service. How am I able to use my phone number and zflip? It seems like even when I turn off cellular or the esim on the iphone, my zflip does not have Tmobile service.
One of the most hype market segments of the past few years has been Physical Security Information Management (PSIM). The promise of integrating systems which were not designed to be integrated, and presenting system information to users via a single common interface has sparked the interest of many in the industry. However, skepticism abounds about PSIM's adoption.
Overwhelmingly integrators are staying far away from PSIM despite the hype. Use is even far below the much maligned video analytic market. This, for a group, who 75% of which are deploying more IP than analog cameras.
There were no clear-cut trends as to which integrators did or did not deploy PSIM. Those answering "rarely" were nearly equal across all deployment sizes (1-16, 17-32, 32+). Additionally, those deploying PSIM did not seem to have a clear favorite VMS. Respondents cited mulitple platforms as their favorites.
The number one most-cited reason for avoiding PSIM was cost. Indeed, this has been the greatest concern of many in the industry, as we've cited in a number of previous reports. PSIM deployments are routinely in the six-figure range, placing them well outside the reach of most customers. Most of the "big" names in the PSIM industry (Proximex, Vidsys, CNL, etc.) do not seem concerned with this, instead focusing on a very small number of high-dollar deployments.
There may be an opportunity for lower-cost PSIM providers to enter the industry and provide much of the functionality of the big names at a fraction of the cost. Recently, we reviewed SureView Systems' Immix, one of these platforms. While it doesn't provide some of the higher-end functions of the better-known PSIM platforms, it does integrate systems which were not built to be integrated, provides mapping and event handling, etc., the bulk of the functions most customers would seek. It will be interesting to see whether providers such as SureView can gain more marketshare for PSIM.
The next most common reason our users were not deploying PSIM was the lack of demand. This is also in line with what we have seen. If there are only a handful of a deployments from each PSIM vendor each year, yet there are thousands of security deployments, PSIM likely makes up below 1% of these deployments.
Much of PSIM's functionality may be realized by utilizing existing VMS and access control platforms which integrate other systems. The top two systems users wish to integrate are video and access control, with intrusion detection and fire alarm following after. Most users do not need the workflow or procedural functions of PSIM. Most end users have also standardized on a single video or access platform across the organization, which makes PSIM's varied third party integrations a moot point.
Despite industry analysts and talking heads hawking PSIM as the next big thing for the past few years, multiple integrators answered that they weren't familiar with the term. Others took it to mean integration of VMS and access control via available out of the box integrations. It is obvious that PSIM does not have the market awareness that mainstream security industry media would have us believe.
[Update 2017: PSIM continues to be a niche market, with not a lot of progress and few, if any new entrants. VMSes have become increasingly PSIM competitors, in particular Genetec, which while not calling themselves a PSIM is playing the role of 'PSIM' in many systems.]
Prepaid accounts can be tricky, especially if you haven't created an account on the other carrier's website. AT&T Prepaid, for example, you will need to call 800.901.9878 to get your account number, which is different than your phone number. Additionally, you may only need an account PIN for a prepaid plan, which you would use for the number transfer PIN.
Old Service Provider Account Number: This is the account number or account ID you had associated with your old carrier. If you are unsure where to locate this, view this guide [link to guide on how to find account IDs based on carrier].
Old Service Provider Passphrase or Pin: This is the passphrase or pin associated with your old carrier. When porting out, your carrier may have provided you with a number transfer pin. Use this here. If you are unsure where to locate this, view this guide [link to guide with how to find account pins based on carrier].
Submit these details to initiate the number transfer process. This process can take anywhere from 10 minutes to 24 hours, depending on your previous carrier. You will receive an email when this process is complete.
Next, make a directory for psim, say /usr/local/psim, creatingsubdirectories lib and include (again, if you choose some other directory forpsim, change everything below accordingly), and do the following from whateverdirectory you've unpacked the PSim source in.
This is a long line; the `\' allows one room to continue on a new line, inresponse to a `?' prompt. Note that the order of the command-line options heremay be important, so stick to the order shown here.
The program simulates an M/M/1queue. There is a single server, to which jobs arrive at random times,with the interarrival time having an exponential distribution. The servicetime is also random, with an exponential distribution. If the server is busywhen a job arrives, the job joins a queue. (In this simulation, we areassuming that the server is some kind of machine, so we refer to it as themachine.)
We are interested in determining the long-run average wait time per job.There is an exact mathematical formula for this quantity, but here we willfind the value via simulation instead, to illustrate PSim.
First, a few words on threaded programming. PSim uses what is calledprocess-oriented simulation, meaning that each different activity inthe system being simulated is modeled by a "process," actually meaning athread.
You will not be calling the pth thread library directly. Instead,you will make calls to PSim wrapper functions, which in turn call the pthfunctions. However, the key to understanding how to use PSim is understandinghow the various threads relinquish control of the CPU, causing one thread toexecute for a while, then another thread, then another, etc. The programmermust arrange things so that the correct sequence of thread alternation willoccur. The following concepts may seem somewhat vague when you first readthem, but there will be an example at the end, and will really become clearerwhen we apply them to PSim further below.
A thread is like a Unix process, and in fact is sometimes called alightweight process. The difference is that although each thread has its ownstack, thus its own local variables, the global variables are shared by allthreads. (See my OStutorial if you need review of or an introduction to OS processconcepts.)
The pth thread manager acts like a "mini-OS." Just like a real OSmaintains a table of processes, a thread system's thread manager maintains atable of threads. When one thread gives up the CPU, or has its turnpre-empted (see below), the thread manager looks in the table for anotherthread to activate. Whichever thread is activated will then resume executionat the line at which it had left off, i.e. the line at which it hadrelinquished control Ii classical computer science literature, we say thatthe threads are coroutines.
Thread systems are either kernel-level or user-level. Inthe former case, each thread really does act like a process, and in fact willshow up on Unix systems when one runs the ps command. The different threadsset up by a given application program take turns running, just like processesdo. When a thread is activated, it is given a quantum of time, atthe end of which a hardware interrupt from a timer cause control of the CPU tobe transferred to the thread manager; we say that the thread has beenpre-empted. This kind of thread system is particularly useful onmultiprocessor systems, and is used in the widely-used Unix pthreads system(though not in all Unix threads systems) and also Windows NT threads.
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