Below are Digit Mapping and Cause Code Tables for Interworking of SS7(ITU) to the CAS (E1R2) protocol.
SS7 (ITU) |
To |
CAS (E1R2) |
||
00 |
Unknown |
>> |
1 |
Subscriber w/o priority |
01 |
Operator, French |
>> |
5 |
Operator |
02 |
Operator, English |
>> |
5 |
Operator |
03 |
Operator, German |
>> |
5 |
Operator |
04 |
Operator, Russian |
>> |
5 |
Operator |
05 |
Operator, Spanish |
>> |
5 |
Operator |
06 |
mutually agreed language |
>> |
5 |
Operator |
07 |
mutually agreed language |
>> |
5 |
Operator |
08 |
mutually agreed language |
>> |
5 |
Operator |
09 |
Reserved |
>> |
1 |
Subscriber w/o priority |
0A |
Ordinary Subscriber |
>> |
1 |
Subscriber w/o priority |
0B |
Calling Subscriber with Priority |
>> |
2 |
Subscriber with priority |
0C |
Data Call |
>> |
6 |
Data Transmission |
0D |
Test Call |
>> |
3 |
Maintenance Equipment |
0F |
Payphone |
>> |
4 |
Spare / Payphone |
|
Everything ELSE |
>> |
1 |
Subscriber w/o priority |
|
|
|
|
|
CAS (E1R2) |
To |
SS7 (ITU97) |
||
1 |
Subscriber w/o priority |
>> |
0A |
Ordinary Subscriber |
2 |
Subscriber with priority |
>> |
0B |
Calling Subscriber with Priority |
3 |
Maintenance Equip |
>> |
0D |
Test Call |
4 |
Spare / Payphone |
>> |
0F |
Payphone |
5 |
Operator |
>> |
02 |
Operator, English |
6 |
Data Transmission |
>> |
0C |
Data Call |
7 |
Subscriber |
>> |
0A |
Ordinary Subscriber |
8 |
Data Transmission |
>> |
0C |
Data Call |
9 |
Subscriber with Priority |
>> |
0B |
Calling Subscriber with Priority |
0 |
Operator |
>> |
02 |
Operator, English |
|
Everything ELSE |
>> |
0A |
Ordinary Subscriber |
CAS (E1R2) |
To |
SS7 (ITU97) |
||
2 |
Send special information tone |
<> |
38 |
Network out of order |
3 |
Subscriber line busy |
<> |
17 |
User busy |
4 |
Congestion |
<> |
42 |
Switching equipment congestion |
5 |
Unallocated number |
<> |
01 |
Unallocated number |
8 |
Out of order |
<> |
27 |
Destination out of order |