Programming manual for RD6203
Page 35
A
PPENDIX
1:
T
HE PROTOCOLS
The RD62 dialler gives the option of reporting via the following protocols:
1. SIA 1
2. Fast Format
3. Contact ID
4. Voice
5. Semadigit
6. XSIA
The Fast Format and the Contact ID protocols are largely similar. Both protocols use DTMF tones to transmit
the information. These DTMF tones sound as if the keys on a touch-tone telephone are being pressed.
The information to be transmitted is numbers, and the speed with which it is transmitted depends on the
number of channels. With 8 channels this is approximately 4 seconds per report, with 16 channels it is
approximately 6.5 seconds per report. This does not include the time required to dial the number.
The SIA 1 protocol, in contrast, uses both numbers and figures. The information can consist of ASCII
characters 0 to 127. This protocol is also used for modems, BELL 103 or CCITT V.21 in the UK, and is
transmitted at 300 Baud. This equates to approximately 30 characters per second. As a transmission can
contain different information, it is not possible to state a time for this. A transmission can take place within 3
seconds providing only 1 event is reported.
The XSIA protocol supports level 1, 2 and 3 functions of the SIA standard. This includes audio listen-in, text
blocks and several account numbers in one call.
1.
Fast Format
The Fast Format protocol is also known as Scancom 1400 Superfast and Scancom 1600 Superfast. The
numbers 1400 and 1600 relate to the handshake and the kiss-off of the protocol.
The handshake consists of 2 different tones each of 100 ms in length and separated by a pause of 100 ms.
The first tone is 1400 and the second tone is always 2300 Hz. With the first tone being 1600 Hz, the second
tone can be 2000 Hz, 2100 Hz or 2300 Hz. The kiss-off is always equivalent to the lowest tone of the
handshake.
During transmission, tones last 70 ms with a 70 ms pause in between each tone. The information transmitted
has the following format:
KKKK 12345678 S
(8 channel transmission)
or
KKKK 1234567890123456 S
(16 channel transmission)
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