Grandstream UCM6308A, IP PBX appliance, 8 FXO ports, 8 FXS ports, Dual GigE RJ45 Ethernet ports with PoE Plus

Analog FXS ports 8 RJ11 ports FXO ports PSTN lines 8 RJ11 ports Network interfaces Three adaptive Gigabit network ports (dial-up, routable, or dual mode) with PoE+ support NAT Router Yes (supports router mode and switch mode) Peripheral ports 2*USB 3.0, 1* SD Card Slot The SIDs Power supply 1/2, FXS, FXO, LAN, WAN, Heartbeat LCD screen Matrix graphic LCD screen, 128x32 dots with buttons DOWN (down) and OK Reset button Yes, long press to reset to factory settings, short press to reboot VoP LEC capabilities with NLP Packetized Voice Protocol, 128ms-tail-length Operator-grade echo cancellation, Dynamic jitter buffer, modem detection and automatic switching to G.711, NetEQ, FEC 2.0, jitter tolerance (up to 50% loss of audio packets) Voice and fax codecs Opus, G.711 A-law/U-law, G.722, G722.1 G722.1C, G.723.1 5.3K/6.3K, G.726-32, G.729A/B, iLBC, GSM; T.38 QoS Layer 2 QoS (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS API API for integrating third-party platforms and applications The operating system Based on Asterisk version 16 DTMF methods In-band audio, RFC4733 and SIP INFO Automatic Configuration protocol and Plug-and-Play Mass configuration using an XML configuration file with AES encryption, automatic detection and configuration of subscriber data IP devices from Grandstream using ZeroConfig (DHCP Option 66 multicast SIP SUBSCRIBE mDNS), a list of events between the local and remote backbone Network protocols TCP/UDP/IP, RTP/RTCP, ICMP, ARP, DNS, DDNS, DHCP, NTP, TFTP, SSH, HTTP/HTTPS, PPPoE, STUN, SRTP, TLS, LDAP, HDLC, HDLC-ETH, PPP, Frame Relay (in development), IPv6, OpenVPN® Hang-up methods Busy/Overload/Howl Tone, Reverse polarity, Short-term shutdown, Circuit current shutdown Data encryption SRTP, TLS, HTTPS, SSH, 802.1X