![]() ![]() LOG "Finished sending ICMS to all 12 radios" LOG "Finished sending STAT-X ALARM to all 12 radios" ![]() LOG "Finished sending BILGE ALARM to all 12 radios" LOG "Finished sending FIRE ALARM to all 12 radios" ![]() The ISSI number is fetched from the UDD according to the last two digits of the counter. For every loop the "Counter" is increased by 1. The following event will loop at 2.5 seconds intervals, one time for each handset. # bits, incl 4-byte (32 bits) TL-4 header Previously we showed how unencrypted TETRA messages could be listened to using telive in our tutorial. They write that their solution can assemble long multiframe SDS messages. ![]() The number of bits (found in the rightmost column below) is used as a parameter in the "at+cmgs" command to the radio. SDS stands for short data service and is the TETRA equivalent to SMS text messages used on a GSM network. When the timer times out, it will trigger Event 21 in the next section.īefore the AT Commands can be entered in the event handler, we need to calculate the number of bits in each of the text messages. The event will trigger a 0.1 sec timer, with a "Counter" value ("Related To Number") 1101, 1201, 1301 or 1401, depending on which input was triggered. The message must be sent to one handset at a time, with minimum 2 seconds interval between each message. The message should be sent to 12 different handsets, with ISSI numbers 10001 - 10012. The configuration is best described using the example from the drawing at the top of this article.įour inputs on an TKIE-2 should generate the following messages: The line must be terminated with Ctrl+Z (0x1A). 0x01: Validity period: No validity period, Forward address type: SSI.0x01: Message reference number (should be upcounting with each new message, value from 0x00-0xff).0x02: Message type: SDS-TRANSFER, Delivery report request: No DR requested, Service selection: Group or individual service, Store/forward control: No storage/forward.The second line in the data including TL-4 header: The line must be terminated with CR + LF. The first line "at+cmgs=1001,128" tells the radio that we want to send an SDS of 128 bits (= 16 bytes) to subsctiber 1001. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |