Honeywell Galaxy 3-48C Programming Manual page 128

56 - Communications (cont'd)
3 = X.25
The X.25 dialling type allows transmission of data via an X.25 network to compatible X.25 receivers. The
ISDN Module uses the D-channel of the ISDN line to set up the connection. After set-up the connection will
remain activated. On selection of the X.25 dial type a number of configuration options will be made available.
1 = TEI (Terminal Endpoint Identifier)
Since it is possible to connect several devices to one ISDN line, like X.25 ISDN Module but also X.25
pay systems for an ATM card, the local telecom provider uses the TEI to identify the devices. The local
telecom provider issues the TEI number. The value can vary from 00 to 63.
2 = LCGN (Logical Channel Group Number)/ 3 = LCN (Logical Channel Number)
The X.25 data network uses the LCGN and LCN to identify the users that are connected. Normally the
users are connected directly to the X.25 network. To allow a high number of users the LCN can vary from
000 to 255. The LCGN can multiply this number of users with 15. The LCGN can vary from 00 to 15.
When using X.25 over ISDN the LCGN is set to 00 and the LCN is set to 001.
4 = Polling Rate
The polling rate is used to monitor the X.25 connection end to end. A poll is sent from the ISDN Module
to the X.25 receiver. The receiver also monitors if the poll is received within the specified limit. The interval
between the polls can be programmed using this parameter.
5 = CUG (Closed User Group)
Depending on the country of use and the local telecom provider the CUG index is used. The telecom
provider can issue a closed number group to a certain monitoring station. The extra subscription for X.25
use over the ISDN line is often available in several packages depending on the use of the X.25 facility. The
value can vary from 0 to 9.
4 = RAM
Option not used
4 = Format
The ISDN module provides seven signalling formats:
1 = DTMF
2 = SIA
3 = Microtech
4 = Contact ID
5 = Robofon
6 = X.25 Protocol 1 (SIA based format compatible with the OA BX X.25 receiver)
7 = X.25 Protocol 2 (SIA based format compatible with the Alphatronics RC 4000 receiver)
NOTE: The DTMF, SIA, Microtech and Contact ID formats are identical in structure and programming to
the Telecom Module menu.
NOTE: X.25 Protocol 1 and Protocol 2 are similar in programming structure to the SIA protocol.
Galaxy 3 Series Programming Manual
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