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Grandstream GXW4108
| Type | 8-Port FXO VoIP Gateway (analog PSTN to SIP conversion) |
| FXO Ports | 8 × RJ11 (connects up to 8 analog telephone lines) |
| SIP Support | Up to 2 SIP server profiles |
| Network Interfaces | 2 × 10/100 Mbps Ethernet ports (LAN/WAN) |
| Audio Codecs | G.711, G.723.1, G.729A/B, G.726, iLBC (varies by firmware) |
| Fax Support | T.38 fax relay + G.711 pass-through |
| Security | TLS, SRTP, HTTPS encryption support |
| Power | 12V DC external adapter |