| Business | Phone |
| Errigal Telecommunications 220 Montgomery St, San Francisco 94104 | (415) 835-5917 |
| Global Netoptex Inc 365 Main St, San Francisco 94105 | (415) 979-9786 |
| Grove Communications 28 Prescott Ct, San Francisco 94133 | (415) 421-3510 |
| Grove Communications 2841 Sacramento St, San Francisco 94115 | (415) 421-3510 |
| Q Inc 110 Sutter St # 1000, San Francisco 94104 | (415) 354-4900 |