Iridium does have a very powerful paging channel that can ring the phone indoors, but the customer may have to walk outdoors to take the call.

Initially, CB channels 1 through 3 remained allocated to amateur radio and channel 23 was used by paging services.

The paging channel frame time is 20 ms, and is time aligned to the IS-95 system ( i. e. GPS ) 2-second roll-over.

There are two possible rates used on the paging channel: 4800 bit / s or 9600 bit / s.

A set of messages communicate detailed network overhead to the mobiles, circulating this information while the paging channel is free.

The paging channel also carries higher-priority messages dedicated to setting up calls to and from the mobiles.

When a mobile is idle, it is mostly listening to a paging channel.

Like the paging channel, traffic channels have a frame time of 20ms.

Commercial paging transmitters typically radiate 1000 watts of effective power, resulting in a much wider coverage area per tower than a mobile phone transmitter, which typically radiates around 0. 6 Watts per channel.

The tower also supported the CHAY-FM antenna, CKBB-AM's STL, CBLFT-TV's channel 55 antenna, as well as paging and other communications systems.

Some satellite phone networks provide a one-way paging channel to alert users in poor coverage areas of an incoming call.

In 1979 the Board introduced a Motorola single channel radio paging system, which was upgraded to a two channel system.

A CPU sends relatively small channel programs to the controller via the channel to handle I / O tasks, which the channel and controller can, in many cases, complete without further intervention from the CPU ( exception: those channel programs which utilize ' program controlled interrupts ', PCIs, to facilitate program loading, demand paging and other essential system tasks ).

* sending short messages, analogous to SMS or two-way paging ;

This is convenient for many users, due to the widespread adoption of email ; but email-based message submission methods do not usually provide any way to ensure that messages have been received by the paging network.

In the mid-1990s, some paging companies began offering a service, which allowed a customer to call their pager-number, and have numeric messages read back to them.

By the mid 1970s digital storage and analog to digital conversion devises had emerged and paging companies began handling client messages electronically.

VMI positioned Voice-mail ® as an enhancement to the rapidly growing paging and mobile telephone market, providing enhancements that improved the service and reduced cost by automating the delivery of messages.

The bursty nature of packet traffic means that more paging messages are expected per mobile, and so it is worth knowing the location of the mobile more accurately than it would be with traditional circuit-switched traffic.

Some systems send radio paging messages which can either 1 ) beep a paging receiver, 2 ) send a numeric message, or 3 ) send a text message.

When paging is used, a problem called " thrashing " can occur, in which the computer spends an unsuitable amount of time swapping pages to and from a backing store, hence slowing down useful work.

Virtual memory systems separate the memory addresses used by a process from actual physical addresses, allowing separation of processes and increasing the effectively available amount of RAM using paging or swapping to secondary storage.

When the segmentation unit generates and validates these 32-bit virtual addresses from a program's logical ( 46-bit ) addresses, the enabled paging unit finally translates these virtual addresses into physical addresses.

The U. S. paging industry generated $ 2. 1 billion in revenue in 2008, down from $ 6. 2 billion in 2003.

However, this can also be disadvantageous, as a message sent to a pager must be broadcast from every paging transmitter in the pager's service area.

In the U. S., the Bell Operating Companies and their cellular divisions had been prohibited by the FCC from offering voice-mail and other enhanced services such as paging and telephone answering services ( no such prohibition existed in foreign countries ).

In computer operating systems, paging is one of the memory-management schemes by which a computer can store and retrieve data from secondary storage for use in main memory.

In the paging memory-management scheme, the operating system retrieves data from secondary storage in same-size blocks called pages.

Many schools and other larger institutions are no longer using the large, bulky microphone PA systems and have switched to telephone system paging, as it can be accessed from many different points in the school.

However, general protection faults are still used to report other protection violations ( aside from memory access violations ) when paging is used, such as the use of instructions not accessible from the current privilege level.

It naturally implements demand paging, because initially file contents are not entirely read from disk and do not use physical RAM at all.

Depending on the employment setting, the roles and level of responsibilities of a PBX operator can vary greatly, from performing wake-up calls in a hotel to coordinating emergency responses, dispatching, and overhead paging in hospitals.

All the running programs had to fit into conventional memory, as there was no support for paging to disk, though programs with DOS extenders such as DOS / 4GW were immune to this issue as DOS / 4GW spared conventional memory from overflow.

The earlier Ferranti Atlas Computer was a seminal platform for paging research, but suffered from well-studied performance issues such as thrashing.

Beginning with version 6. 0 " logical pages " started to be used, which were mapped to a page allocation tables ( PATs ) — this allowed Btrieve to change their record update technique from what was later known as " pre-image paging " to a technique called " shadow-paging ".

The change-over from pre-image paging to shadow-paging caused radical file format changes that broke compatibility between previous versions of Btrieve and version 6. x of the product.

It differed from the 80386 in not supporting real mode ( the processor booted directly into protected mode ) and having no support for paging in the MMU.

The Rockmans inspiration may have been from early designs produced by a paging and sound reinforcement company, first used by the band Boston in 1976.

: The loss of power from the UPS units caused a loss of all the following: the control room annunciators, the safety parameter display system computer, control rod position indication, the plant process computer, the core thermal limits computer, the feedwater control system, some of the lighting for the plant, the plant radio and paging systems, some instrumentation for balance-of-plant systems, and some instrument recorders.

MonetDB internal data representation is memory-based, relying on the huge memory addressing ranges of contemporary CPUs using demand paging, and thus departing from traditional DBMS designs involving complex management of large data stores in limited memory.

In a review of the episodes featured on The Simpsons Gone Wild, PopMatters critic Stephen Haag wrote that " none of these episodes will end up in the Simpsons Hall of Fame ", and that " The Mansion Family " is " hardly a classic episode, but Lord knows there are plenty worse from season 11 ( paging ' Bart to the Future ').

* " Mr. Bob Dobalina " was a name heard over a paging system, " China Clipper ..." came from the movie China Clipper, " Never mind the furthermore ..." from the Rodgers and Hammerstein musical Oklahoma !, and " It is of my opinion ..." from a political speech.