Stage 3 description for numbering identification supplementary services using SS No. 7: Direct-Dialling-In (DDI)
| Accuris | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Number | Q.731.1 FRENCH |
| Product Name | Stage 3 description for numbering identification supplementary services using SS No. 7: Direct-Dialling-In (DDI) |