| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| isdn vtc | 0.9 | 0.8 | 1018 | 48 |
| isdn ctc | 1.68 | 1 | 9174 | 90 |
| isdn tcas | 1.03 | 0.3 | 741 | 32 |
| isdn tcp/ip | 1.52 | 0.3 | 8937 | 57 |
| isdn cti | 0.01 | 0.1 | 8795 | 12 |
| isdn cause code 1 | 0.94 | 0.3 | 8271 | 75 |
| isdn cause codes | 1.03 | 0.2 | 158 | 33 |
| isdn circuit | 1.45 | 0.9 | 5902 | 49 |
| isdn connection | 1.32 | 0.6 | 9676 | 87 |
| isdn channels | 0.22 | 0.3 | 9078 | 30 |
| isdn technology | 1.34 | 0.3 | 82 | 72 |
| isdn code | 0.62 | 0.9 | 4253 | 63 |
