Grandstream HT701 FXS Analog VOIP Gateway

GrandStream GXW4008 FXS Gateway with power. the telephone ports are noisy

Grandstream HT802 v2 2-Port FXS Analog Telephone Adapter – Ultra-Compact ATA for

Grandstream HT801 v2 1-Port FXS Analog Telephone Adapter – Compact VoIP ATA for

Grandstream HT814 Analog Telephone Adapter 4 FXS Port Gigabit Router ATA

Grandstream HT813 VoIP Gateway Fast Ethernet Hybrid ATA with FXS and FXO Ports

AudioCodes MP-112R 2FXS SIP VoIP Gateway Analog Phone Adapter MP112

Grandstream HT814 Analog Telephone Adapter 4 FXS Port Gigabit Router ATA