| Similarity | Rank | |
|---|---|---|
| VOIP | 0.971 | 38302 |
| PBX | 0.903 | 33153 |
| telephony | 0.897 | 28130 |
| Telephony | 0.885 | 74891 |
| PSTN | 0.876 | 70140 |
| IP-based | 0.841 | 68683 |
| Vonage | 0.840 | 66190 |
| RingCentral | 0.833 | 80228 |
| ISDN | 0.813 | 57455 |
| SIP | 0.807 | 25114 |
| ADSL | 0.803 | 42834 |
| Mitel | 0.800 | 89951 |
| DSL | 0.798 | 22977 |
| landline | 0.796 | 30616 |
| WLAN | 0.794 | 52152 |
| WiMAX | 0.793 | 52149 |
| trunking | 0.785 | 85801 |
| VPN | 0.782 | 16155 |
| wireless | 0.778 | 3977 |
| IPTV | 0.778 | 42631 |
| Asterisk | 0.778 | 57059 |
| WAP | 0.778 | 52594 |
| Polycom | 0.776 | 77376 |
| Skype's | 0.776 | 99490 |
| Conferencing | 0.774 | 59393 |