... voip Gateway 1.With up to 4 E1/T1 digital trunks 2.Digital Media Gateway 3. SIP, ISDN PRI, G.711, G ... Trunking voip Gateway With up to 4 E1/T1 digital trunks, MX100-TG series Digital Media Gateway supports varieties of protocols and codecs ... . It is packaged in a 1U chassis.Applications- PSTN-SIP digital trunking gateway- Interconnecting legacy PBX to IP-based voice networkModelE1 ...