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Excerpt taken from: WMO No. 386 Manual on the Global Telecommunication System
Part II - Operational Procedures for the GTS

Attachment II-7 - ROUTEING CATALOGUES

 

1. FORMAT OF THE ROUTEING CATALOGUE

1.1 The routeing catalogue should be produced as an ASCII file, which could be imported into database applications. The information should therefore be presented in a database structure. The hereunder structure allows an easy display on a screen, e.g. using a “view” command.

1.2 The file containing the routeing catalogue of a GTS centre should be named: CCCCROCA.TXT, where CCCC is the location indicator of the centre. The date of the preparation of the catalogue should be inserted in the first line of the line as YYYYMMDD (where YYYY is the year, MM the month and DD the day).

1.3 For each abbreviated heading, a record should comprise the following fields

Field number
Content
Width
1
Abbreviated heading TTAAii CCCC
11
2
GTS circuit from which the bulletin is received (see paragraph 1.4)
4
3
GTS circuit to which the bulletin is sent (see paragraph 1.4)
4
 
As many additional fields in the format of field No. 3 as additional circuits to which the bulletin is sent.
 

 

1.4 The following combination of four characters should be used to designate the GTS circuits and entered into fields No. 2, 3 and subsequent fields:

(a)
When the GTS circuit is a the unique point-to-point circuit connecting the GTS centre to an adjacent centre, the location indicator CCCC of the relevant adjacent GTS centre should be used;
(b)
In other cases, e.g. when the circuit is a point-to-multipoint circuit (e.g. a satellite distribution system), a specific CCCC combination should be used, for example using a combination of letters and figures to differentiate them from the usual location indicators CCCC; the description of the relevant GTS circuits may be given in the fi le CCCCRMKS.TXT (see paragraph 2).


In the combination of characters CCCC, wild cards “*” should only be used when the GTS centre cannot provide complete information. The use of wild cards is not recommended, since it limits the information.

1.5 The fields should be surrounded by quotes and separated by commas

Sample of structure:
“SMAA01 EGRR”,“RJTD”,“ANOU”,“DEMS”,“NFFN”,“NTAA”,“NZKL”,“PMBY”
“SMAA01 EGRR”,“KWBC”,“NZKL”
“SMAA10 KWBC”,“EGRR”,“DEMS”,“NFFN”,“NTAA”,“NZKL”,“WIIX”

 

2. ADDITIONAL INFORMATION

Any additional information, such as the creation dates of the directory, details of any extra CCCCs included in the routeing catalogue, the means and procedures to access the routeing catalogue (e.g. FTP server) and any other information which may help users should be included in a file named:

CCCCRMKS.TXT, where CCCC is the location indicator of the centre.

 

3. ACCESS TO THE ROUTEING CATALOGUES OF RTHs

3.1 Each RTH should make available its own routeing catalogue on the FTP server, which it operates. The files from each centre should be found under GTS_routeing/CCCC subdirectories on all servers. When an RTH does not have the capacity to make its routeing catalogue available on a local server, it should transfer its routeing catalogue CCCCROCA.TXT into the WMO FTP server under the sub-directory GTS_routeing/ CCCC, preferably by direct access to the WMO FTP server or by sending diskettes to the Secretariat.

3.2 RTHs should transfer their files CCCCRMKS.TXT into the WMO FTP server (www.wmo.ch) under the sub-directory GTS_routeing/CCCC, where CCCC is the location indicator of the RTH. Each subdirectory GTS_routeing/CCCC is reserved for each RTH, which may transfer and update the data as required. Each RTH should transfer its CCCCRMKS.TXT into the WMO FTP server, preferably by direct access to the WMO FTP server or by sending diskettes to the Secretariat. By accessing the information included in the files CCCCRMKS.TXT available in the WMO FTP server, the GTS centres should find information on the means and procedures to access the routeing directories of any RTHs.

3.3 RTH Offenbach operates on its own FTP server a mirror site of the part of the WMO FTP server related to the routeing catalogues.

 

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