1 Port, 2 Port, 4 Port, 8 Port | 24 Port, 32 Port, 4 Port, 8 Port, 16 Port |
No, Yes | — |
Yes | — |
Yes | — |
Yes | — |
Yes | — |
Asterisk, Elastix, FreeBPX, FreeSWITCH, IP BRICK, trixbox, YATE | — |
YES | — |
Euro ISDN, Network or CPE, AT&T 4ESS, CAS Voice Modes | — |
5 Years From Manufacturer | 3 Years From Manufacturer |
Allo | Synway |
— | Connectors: 2-32 shielded female RJ-11 jacks, Number of ports: 2-32 FXO/FXS configurable, Use multiple gateway units for higher port counts |
— | Connector: 2 shielded female RJ-45 jack for LAN, Network Interface: 10/100 Base-T Ethernet LAN port |
— | RTP/RTCP for delivery of voice, SIP per RFC 3261 |
— | T.38 FoIP transcode fax from T.30 fax protocol (supporting V.17) modulation schemes, T.38 for transmission over a packet network |
— | DTMF detection, and fax tone detection, G.711 μ-Law and A-Law, G.723.1, G.729AB Silence suppression with comfort noise G.168 automatic echo cancellation Call Progress Analysis (CPA), Including Positive Voice Detection, Positive Answering Machine Detection (PAMD) |
— | From IP to PSTN or from PSTN to IP, IP fault tolerance, IP load balancing, User configuration list of VoIP endpoints |
— | FXO, FXS |