Key Specifications & Features

Based on the manufacturer and distributor documentation:

• 16 analog FXS ports (for connecting analog telephones, fax machines or legacy equipment) via RJ-11 and also a 50-pin Telco connector for high-density connections. VoIP Supply+2grandstream.com+2

• Gigabit Ethernet (1 × RJ-45 10/100/1000 Mbps auto-sensing) for IP network connectivity. grandstream.com+1

• Support for a wide range of voice/fax codecs: G.711 A/µ, G.723.1, G.726, G.729A/B, iLBC; and T.38 fax‐over‐IP support (and fallback to G.711). grandstream.com+1

• Advanced telephony features: call transfer/forward/waiting, DND, caller ID formats (Bellcore, ETSI etc), 3-way voice conferencing per port (in the series). grandstream.com+1

• Security & provisioning: TLS/SRTP encryption for calls/accounts, HTTPS for interface, TR-069 and XML provisioning support, dual firmware images in series. grandstream.com+1

• Physical & environmental specs (from datasheet):

  • Dimensions ~ 440 mm (L) × 185 mm (W) × 44 mm (H) for the 16-port version. grandstream.com+1

  • Operating temperature 0 °C to 40 °C, humidity 10%–90% non-condensing. grandstream.com