Cisco Small Business 500 Series IP Phones Comparison
| Model | Voice Lines | Ethernet Ports | Power over Ethernet (PoE) |
| SPA 301G | 1 | mame v serverovne | |
| SPA 303G | 3 | 2 | No |
| SPA 501G | 8 | nema display | |
| SPA 502G | 1 | jen jedna linka, vhodne jako levne PoE | |
| SPA 504G | 4 | 2 | Yes |
| SPA 508G | 8 | 2 | Yes |
| SPA 509G | 12 | 2 | Yes |
| SPA 525G | 5 | 2 | barevny display i PoE |