| Identifier | Description |
| basic-1tr6 | German 1TR6 ISDN switches |
| basic-5ess | AT&T basic rate switches |
| basic-dms100 | NT DMS-100 basic rate switches |
| basic-net3 | NET3 ISDN and Euro-ISDN switches (UK and others), also called E-DSS1 or DSS1 |
| basic-ni1 | National ISDN-1 switches |
| basic-nwnet3 | Norway Net3 switches |
| basic-nznet3 | New Zealand Net3 switches |
| basic-ts013 | Australian TS013 switches |
| None | No switch defined |
| ntt | Japanese NTT ISDN switches (ISDN BRI only) |
| primary-4ess | AT&T 4ESS switch type for the United States (ISDN PRI only) |
| primary-5ess | AT&T 5ESS switch type for the United States (ISDN PRI only) |
| primary-dms100 | NT DMS-100 switch type for the United States (ISDN PRI only) |
| primary-net5 | NET5 ISDN PRI switches (Europe) |
| primary-ntt | INS-Net 1500 for Japan (ISDN PRI only) |
| primary-ts014 | Australian TS014 switches (ISDN PRI only) |
| vn2 | French VN2 ISDN switches (ISDN BRI only) |
| vn3 | French VN3 ISDN switches (ISDN BRI only) |
| vn4 | French VN4 ISDN switches (ISDN BRI only) |