- Dual Gigabit autosensing RJ45 / Integrated NAT router - TLS and SRTP security encryption - Automated provisioning by HTTP/TFTP with XML - E1/T1/J1 ports, support PRI, SS7, MFC R2 - Supports voice codecs...

- Dual Gigabit autosensing RJ45 / Integrated NAT router - TLS and SRTP security encryption - Automated provisioning by HTTP/TFTP with XML - E1/T1/J1 ports, support PRI, SS7, MFC R2 - Supports voice codecs...

- Dual Gigabit autosensing RJ45 / Integrated NAT router - TLS and SRTP security encryption - Automated provisioning by HTTP/TFTP with XML - E1/T1/J1 ports, support PRI, SS7, MFC R2 - Supports voice codecs...

- 8 BRI - 16 VoIP Calls or 8 SIP-SIP calls - 8 Transcoded Calls - High Precision 5ppm Clock - 2x Gig Ethernet - 1x USB port - SN5531/8BIS16VHP/EUI: 8 X ISDN BRI/S0 ports

- 4 BRI - 8 VoIP Calls or 4 SIP-SIP calls - 4 Transcoded Calls - High Precision 5ppm Clock - 2x Gig Ethernet - 1x USB port - SN5531/4BIS8VHP/EUI: 4 X ISDN BRI/S0 ports

- 2 BRI - 4 VoIP Calls or 4 SIP-SIP calls - 2 Transcoded Calls - High Precision 5ppm Clock - 2x Gig Ethernet - 1x USB port - SN5531/2BIS4VHP/EUI: 2 X ISDN BRI/S0 ports

- 1 E1/T1 PRI - High Precision 5ppm Clock - 1x Gig Ethernet - 1x USB port - SN4171/1E30VHP/EUI: 30 VoIP Calls NOT upgradeable

- 1 E1/T1 PRI - High Precision 5ppm Clock - 1x Gig Ethernet - 1x USB port - SN4171/1E15VHP/EUI: 15 VoIP Calls upgradeable to 30

- 1 E1/T1 PRI - High Precision 5ppm Clock - 1x Gig Ethernet - 1x USB port - SN4171/1E15VHP/EUI: 15 VoIP Calls NOT upgradeable

- 16 VoIP Calls or 4 SIP-SIP calls - 1x Gig Ethernet - 1x USB port - High Precision 5ppm Clock - SN4131/8BIS16VHP/EUI: 8 X ISDN BRI/S0 ports

- 8 VoIP Calls or 4 SIP-SIP calls - 1x Gig Ethernet - 1x USB port - High Precision 5ppm Clock - SN4131/4BIS8VHP/EUI: 4 X ISDN BRI/S0 ports

- 4 VoIP Calls or 4 SIP-SIP calls - 1x Gig Ethernet - 1x USB port - High Precision 5ppm Clock - SN4131/2BIS4VHP/EUI: 2 X ISDN BRI/S0 ports

- 4 BRI Ports (TE/NT) - 1 X 10/100

- 2 BRI Ports (TE/NT) - 1 X 10/100

- 2 E1/PRI/T1/J1 Ports - 2 X 10/100/1000

- 1 E1/PRI/T1/J1 Port - 2 X 10/100

- 15 to 120 VoIP calls - WAN Access - VoIP Transcoding Option - Proven Interoperability - QoS and Security - Transparent Telephony Features - High Precision Clock - Flexible Mounting Options -...

- 15 to 120 VoIP calls - VoIP Transcoding Option - Proven Interoperability - QoS and Security - Transparent Telephony Features - High Precision Clock - Flexible Mounting Options - Supported by...

- Up to Four Simultaneous SIP or T.38 Calls - Proven Interoperability - Comprehensive Signaling & Protocol Support - Transparent ISDN Features - Management & Provisioning—Built - Supported by...

- Up to Four Simultaneous SIP or T.38 Calls - Proven Interoperability - Comprehensive Signaling & Protocol Support - Transparent ISDN Features - Management & Provisioning—Built - Supported by...

- Up to Four Simultaneous SIP or T.38 Calls - Proven Interoperability - Comprehensive Signaling & Protocol Support - Transparent ISDN Features - Instant ISDN to VoIP Connectivity - High Precision...

- Up to Four Simultaneous SIP or T.38 Calls - Proven Interoperability - Comprehensive Signaling & Protocol Support - Transparent ISDN Features - Instant ISDN to VoIP Connectivity - High Precision...

- Up to Four Simultaneous SIP or T.38 Calls - Proven Interoperability - Comprehensive Signaling & Protocol Support - Transparent ISDN Features - Instant ISDN to VoIP Connectivity - High Precision Clock...