I don't think you will have to use the mouse often anymore. Once again, a little change regarding this option.
It seemed desirable to block duplicate messages in the filter window also. Before, PDW only checked for duplicate messages in the monitor window, which could cause situations like this :. Nothing would be blocked in the monitor window, the first and last message are no duplicate because of the middle one. If you wanted to filter Message-1 code , but not Message-2 code , Message-1 would appear twice in the filter window. This is solved now, a separate comparison will be made for filtered messages.
The only oddity could be that the second instance of Message-1 would appear in het monitor window, but not in the filter window, causing the message to be blocked "partially".
However, this change will lead to less duplicated messages in the filter window. In the previous version I've made lots of changes regarding Mobitex. Unfortunately, I've made a little mistake in decoding the BaseIDs, causing them to be displayed wrongly. So if you have already started collecting IDs of base stations in your area, I'm afraid that you will have to start all over again With a double left mouse click you can now select a word or address, which you can add to the clipboard using CTRL-C or a right click and 'Copy Selection' , so you can easily paste it somewhere else.
Regarding this option, I received a request to only check the message text. Before, PDW compared -if this option was enabled- the current address and message with those of the previous. If there was a match, the second would not be displayed. However, it seemed desirable if only the message text could be compared, so consecutive messages with the same text, but different addresses, could also be blocked. Next to the option 'Block Duplicate Messages' you will now find 'Only check message text' which will make PDW only check the message text.
Regardless of this change, the option 'Block Duplicate Messages' blocked a bit too much in Mobitex. This would only occur with so-called status messages when the Mobitex option 'Verbose' was enabled. If the Mobitex option 'Verbose' was enabled, status messages and sweep frames containing base station information would appear. Sweep Frames can now be showed apart from status messages. In the previous versions I already made the first changes regarding Mobitex.
This version contains only Mobitex changes. Not everyone likes to monitor Mobitex, since most data is unreadable. But I discovered that lots of issues were decoded wrongly.
Already in the previous version, I was wondering how the 'messages' were addressed. Every message package of data has to have a destination, the receiver has to know what data is his, and what isn't. Mobitex seems to use MANs Mobitex Access Numbers , 7-digit numbers which can represent the destination and also the sender. In all previous versions this data was already visible, but was displayed as the first part of the data.
This first part is in fact a header, which contains the MANs, datatype, amount of data and can also contain controlling and network information. Both MANs will now be displayed, along with the data type. This means that I had to get rid of 3 other items, allowing the new items to be displayed.
Also, the RX-Quality for Mobitex has been improved a bit, so it should be more reliable. By default, they will all be shown.
Like GSM and other cell switched networks, a radio device doesn't only communicate with another device, but also with the network. After all, when switching on a device, it sends a notification, so the network knows that this device is available and via which base station the data has to be sent. Since Mobitex is two-way traffic, things as acknowlegdements also need to be transmitted. These are very short messages, which also were displayed in a wrong way. I don't want to go into this too deeply, but you can enable this type of information by enabling "Verbose" in the Options Window.
People who already monitor will certainly know the periodic, long and unreadable messages which always seem to contain about the same data. Again, a wrong interpretation, in fact these are so-called "Sweep Frames" which can contain network parameters, or neighbour channel information.
Unfortunately, I don't know the exact meaning of all parameters, but what gets to be shown in the new version comes a lot closer to reality. What also should be displayed correctly are the neighbour channels.
Again, like in other digital networks, each base station transmits his neighbour channels once in a while. This offers the mobile stations to periodically check these neighbours to see if one of these signals becomes stronger than the current base station.
This prevents the mobile from checking all available channels, which of course takes a lot more time. Once again, like in other digital networks, each base station transmits its own unique identification. Mobitex uses so-called Base and Area-IDs. These two will be shown in the title bar as one hexadecimal ID. When knowing the exact location of different base stations, this ID can let you know on which base station you are currently tuned.
It would be even better if it would be possible to link a name to these IDs, well that is possible! The file base-ids. More or less a bugfix, but again a bad or missing interpretation.
The earlier mentioned headers also contain the length of a message. Since Mobitex data is transmitted in blocks, the last characters of the last block would be filled with junk characters. Now, knowing the exact amount of data, this issue should be solved. Ofcourse, one column can only be selected once and at least the message column has to be visable.
But as far as I know, dynamic groupcalls are only used in the Netherlands. Using the commandfile external software can be called. The number of characters which could be sent through the command line had a certain limitation, but should now be encreased.
Also the commandfile can now be used with monitor-only messages. Before, this was only possible with filtered messages. Through the years I received lots of questions if it would be possible to run 2 sessions of PDW via two serial ports. The problem is that a VXD-driver can only be loaded once, on one serial port. It has to be possible to install Slicer.
However, someone tipped me that the driver Slicer. After some testing this seemed to work, and after renaming it to Comprt2.
All those years Mobitex didn't change a bit. Recently I noticed that not all characters were being displayed. In fact, these characters are "non-printable" and shouldn't be displayed, but it seems that these characters are being used differently in Mobitex, causing some messages to be displayed shorter than they should be.
In this version these non-printable ASCII is being replaced by other characters so all messages will keep their original length. Since FLEX messages are being sent in 'frames' numbered data blocks , there is a maximum number of characters that can be sent in one single frame. If the network needs to send lots of messages at once, it can happen that one message can not be completed in one single frame, causing the messages to be split in two or more parts which will be sent in a next frame.
If this happens, the message is 'fragmented'. When receiving such a message on a pager, you normally wouldn't notice this, because in most cases the second part will be received before you are able to read the message. When monitoring with PDW, it would seem that one capcode is receiving more than one message, because the fragmentation-bit is not being displayed. You need to push "Apply" first, if you want t o keep the changes. Some users could already use the mousewheel to scroll through the received messages.
This depended on the mouse driver. For those who couldn't use the mousewheel before, it should be possible now. Also there is a new option within "Scrollback", which allows you to determine the scrolling speed. Using the commandfile, users can execute external programs via the commandline. The maximum number of characters which could be used as commandline command seemed a bit too short for longer messages. This limit has been increased to such an extent that I don't expect any more problems.
The commandfile can now also be used for monitor-only messages too. Before, the commandfile was only enabled for filtered messages. Now and then I receive reports that PDW sometimes stops decoding after a while, when using the serial port. In some cases, the needle keeps on moving, but no more messages would appear. In other cases, the needle stops and in those cases it would be possible to reactivate decoding by selecting the soundcard, then reselecting the serial port.
I tried to detect this "stop" and give PDW an interal reset if detected. In version 2. When pusing "more", an extra edit control would appear and the pushbuttons below would move automatically a bit lower. As this didn't always seem to work correctly, all three controls are now visible, but read only. To enter a file, you'll need to select one via the browse button, which also allows you to enter a new filename.
Finally, this is possible! Only the network and the pager s both know for sure the correct message type. Unfortunately, some networks don't stick to these specifications and use the function bits differently, which makes it a bit more difficult to determine the correct message type. Tone-Only messages will always be displayed correctly, as they are just an "empty message". Also, longer messages will also be displayed correctly, as there is a limit to the maximum number of numeric characters, making all longer messages alphanumeric.
The most difficult messages are those which are shorter than the maximum number of numeric characters, they can be numeric or alphanumeric.
PDW uses some tricks to "guess" whether a message is numeric or alphanumeric. In most cases PDW makes the right decision, but unfortunately sometimes a alphanumeric message gets to be displayed as numeric, or numeric messages as alphanumeric.
Despite the improved accuracy I added a new option which allows PDW to decode the 4 function numbers as prescribed in the pocsag protocol specifications. Please be sure to know that your network uses the function numbers as 'NTTA', otherwise some messages would be displayed incorrectly after all For those networks which don't use the function numbers as prescribed, there is also a new option in Pocsag Options : "If PDW can't make an accurate guess, display message both as numeric and alphanumeric".
Logically, those messages would also be counted twice in the statistics although actually one message was received. Anyhow, in those cases you can be sure that as least one of the two messages is correct When displaying a message twice, they will be 'grouped', using an empty line before and after these two messages, also if the "separate messages" option is disabled.
Those options were originally meant to give the PDW users better access to their log files, since plain text files don't support colors and HTML files do. Besides this paging system product line, ABP also has a VoIP door opener to locate at secure entrances that enables security to talk and see video camera the person requesting entrance, all compatible with your Asterisk IPBX system. Should you want to discuss application of these peripheral solutions or have any questions at all, please do not hesitate to contact us.
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