48/72/96 FXO/FXS SIP VoIP Gateway with Mitel Certification SIP & MGCP Routing, DID, MWI, CDR CPU ... ports mode Voice Codec: G.711, G.729A, G.723.1, GSM, iLBC Echo Cancellation: G.168; Tail Length: 64 milliseconds ... two number for incoming calls ( PSTN and extension) The gateway can be configured and controlled by multiple soft switches Can ... 19” Chassis Net Weight:9Kg, Gross weight 14 Kg SIP VoIP Gateway