Standard ECMA-311
Private Integrated Services Network (PISN)
- Inter-Exchange Signalling Protocol - Simple Dialog Supplementary
Service (QSIG-SD)
2nd edition (December 2001)
The latest edition of this Ecma Standard is available here.
You can download the previous replaced "historical" edition of this Ecma Standard, free of charge:
| File name |
Content |
| ECMA-311 1st edition |
Acrobat (r) PDF file |
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