Please can anybody point me to where I can find an 'idiots giude' as to how barrign tables work in relation to TAC and COS and Trunk Main Groups. I do not seem able to work out what sequence of events outgoing calls go through, and how the tables affect that call
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Barring Tables
- Thread starter roachg
- Start date
You need to use the Route Restriction Tables to either allow or block access to numbers.
To find out what tables are associated with which TAC use the command "LACR" followed by the access digit (eg 9) or "A" for all codes and then "A". You should then get a table that show the table associated with the TAC and zone (if there is nothing in an entry then there is no barring).
You should then use the "LRRT" command followed by the table number you want to look at and then "A" to list all digits. The first line should tell you if it is an ALLOW table or a BARRED table. Any numbers in an ALLOW table are allowed to go out on trunks that TAC has access to but any other numbers will be blocked. Conversely a BARRED table will allow any number to go out on the trunks that TAC has access to except the ones in table.
If you need to find out what trunk groups a TAC has access to then you can use the "LTGA" command followed by "A" to list all groups and then "A" again for all zones. You will get a list of all of them with a "N" in place where a TAC has no access and blank where normal route restrictions apply.
Hope this helps.
To find out what tables are associated with which TAC use the command "LACR" followed by the access digit (eg 9) or "A" for all codes and then "A". You should then get a table that show the table associated with the TAC and zone (if there is nothing in an entry then there is no barring).
You should then use the "LRRT" command followed by the table number you want to look at and then "A" to list all digits. The first line should tell you if it is an ALLOW table or a BARRED table. Any numbers in an ALLOW table are allowed to go out on trunks that TAC has access to but any other numbers will be blocked. Conversely a BARRED table will allow any number to go out on the trunks that TAC has access to except the ones in table.
If you need to find out what trunk groups a TAC has access to then you can use the "LTGA" command followed by "A" to list all groups and then "A" again for all zones. You will get a list of all of them with a "N" in place where a TAC has no access and blank where normal route restrictions apply.
Hope this helps.
There are no 'Idiot's guides' to this subject, there are customer Admin courses at Beeston Nottingham but no books nowadays as things are always on CD's.
Brief out line is COS 'Class of Service' :-
LCSD List class of sevice definitions.
What do you want to allow the telephone to do,
Do you want to allow it to divert calls?
So AED and ADP must be in its COS.
Make an O/G call with someone on hold OGH must be in the COS.
You can then build a COS's 0-31 with all situations covered.
Normally COS 0 has only PAX in it which will only give dial tone and the capability to dial another extn within its own pabx, COS 31 can do every thing from Trunk select to Executive override (cut into calls).
Brief out line TAC Trunk Access COS. :-
TAC is again Classes 0-31 and is listed by the command LTGA List Trunk Group Access.
This provides a matrix between the TAC and the Trunk Main Group so you can decide who is allowed to dial where, this also starts to bring in time zones, (Its now getting too deep!)
On the back of the TAC's you also have Route Restrict Tables listed by LACR (TAC)in these tables there are BAR & Allow Tables, this gives even greater control over who can dial what.
For example x24345 COS 12 Tac 3, TAC 3 allows all inter pabx and all inter network calls, but against his public outgoing Tk Gp is RRT 1 with an international office number
900312345678987 and this is allowed,
The story behind this waphel is he cannot dial his Mother around the corner but can dial the office in South Africa.
Next will be Least Cost Routing and more Bar & Allow tables,
Time of day Barring ARRRRRH......
Without proper courses and a lot of trial and error Good Luck.....
Mal.
Brief out line is COS 'Class of Service' :-
LCSD List class of sevice definitions.
What do you want to allow the telephone to do,
Do you want to allow it to divert calls?
So AED and ADP must be in its COS.
Make an O/G call with someone on hold OGH must be in the COS.
You can then build a COS's 0-31 with all situations covered.
Normally COS 0 has only PAX in it which will only give dial tone and the capability to dial another extn within its own pabx, COS 31 can do every thing from Trunk select to Executive override (cut into calls).
Brief out line TAC Trunk Access COS. :-
TAC is again Classes 0-31 and is listed by the command LTGA List Trunk Group Access.
This provides a matrix between the TAC and the Trunk Main Group so you can decide who is allowed to dial where, this also starts to bring in time zones, (Its now getting too deep!)
On the back of the TAC's you also have Route Restrict Tables listed by LACR (TAC)in these tables there are BAR & Allow Tables, this gives even greater control over who can dial what.
For example x24345 COS 12 Tac 3, TAC 3 allows all inter pabx and all inter network calls, but against his public outgoing Tk Gp is RRT 1 with an international office number
900312345678987 and this is allowed,
The story behind this waphel is he cannot dial his Mother around the corner but can dial the office in South Africa.
Next will be Least Cost Routing and more Bar & Allow tables,
Time of day Barring ARRRRRH......
Without proper courses and a lot of trial and error Good Luck.....
Mal.
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