Originally posted by dexman:
Here are a few more types of circuit IDs people may or may not be familiar with:
1) 95/XHGS/123456/NE
2) 95/LGGS/123456/NE
The first ID represents a stand-alone digital DS0 say 56k or 64k.
The second represents a stand-alone analog DS0 type of circuit. Used to see a lot of these, but they are pretty rare now.
XH=56 Kb DDS
XD=64 Kb DDS
Both for ID’s are for access circuits... Meaning there’s an IXC (LD carrier) involved.
Non-Access (within one LATA) has an entirely different set of service codes.
One more format most ya’ll will see that wasn't mentioned in this thread: The good ol’ telephone number format.
Prefix/service code+modifier/NPA/NXX/line number/extension or trunk/segment
Prefix= Admin Area or Market Area designator
Service Code= Two characters representing the type of service
Modifier= provides additional info for the service code including % Lata usage and billing
NPA= Area code
NXX= C.O. code or exchange ID
Line Number= well, that’s the number of the line
Extension= Got me… Never seen that used before
Trunk Code= The sequential number of the trunk in the trunk group
Segment= Drop identifier for multi-point circuits
Example for an OPX circuit:
01/OPNA/111/555/8750//002
01=Market Area
OP= Off-premise extension
NA= inter-lata with no other parameter needed
111= Area Code
555=Exchange
8750=Phone number
“//†No extension or trunk code present
002= Drop two of a multi point OPX
There’s also a message trunk ID that is used to move calls, signaling information between switches:
Trunk number / traffic class (2 characters) – Office class (2 characters) Traffic use (2 characters) Trunk Type modifier /A-end CILLI / signaling code / Z-end CILLI
0001/PH55TEKEWUA/OFLNMOXAAMD/77/OFLNMOXADS0
First trunk (0001) that for two-way SS7 trunks (I’m not even going to try to ‘splain it any more than that… They usually confuse the crap out of me too.)
