- Bluetooth (v4.1) - Binaural / Stereo - Active noise canceling technology - USB Bluetooth adapter included - Up to 98 ft/30m range - Up to 12 hours talking - Hearing protection - For Softphone on...

- Bluetooth (v4.1) - Binaural / Stereo - BT600 USB Bluetooth adapter included - Up to 98 ft/30m range - Up to 12 hours talking / 13 days standby time - Hearing protection - Certified for Microsoft Skype...

- Bluetooth (v4.1) - Monaural - BT600 USB Bluetooth adapter included - Up to 98 ft/30m range - Up to 12 hours talking / 13 days standby time - Hearing protection - Certified for Microsoft Skype for...

- Bluetooth (v3.0) - Up to 7 hours talking / 11 days standby time - 18 grams - Multipoint - Noise canceling - Wind canceling - Smart Sensors - For Softphone on PC/MAC and/or Smartphone by Bluetooth

- 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

- Hi-Fi stereo with passive noise reduction - Connectivity to smartphone and tablet via 3.5 mm -  Leatherette ear cushions fold flat - Carrying case for easy storage and portability - Intuitive inline...

- Connectivity to smartphone and tablet via 3.5 mm - Leatherette ear cushions fold flat - Carrying case for easy storage and portability - Intuitive inline controls (answer/end/volume/mute) - PC wideband audio...

- Hi-Fi stereo with passive noise reduction - Intuitive inline controls (answer/end/volume/mute) - PC wideband audio with noise-canceling microphones - For SoftPhones (Skype, Xten, eyeBeam,...), on PC/MAC via...

- Intuitive inline controls (answer/end/volume/mute) - PC wideband audio with noise-canceling microphones - For SoftPhones (Skype, Xten, eyeBeam,...), on PC/MAC via USB Plug - Optional USB-C version (use...

- Up to 16 users - Up to 8 FXS ports - Up to 4 FXO ports - Up to 4 BRI ports - Up to 2 GSM ports - Up to 4 VoIP Trunks - Pre-configured with 4 FXS ports - V4: LTE SIP Trunking not supported - 2...

- 16 GSM/UMTS/WCDMA Ports - GSM 850/900/1800/1900 MHz - WCDMA 850/1900 MHz, 850/2100 MHz, 900/2100 MHz - 2 X 10/100

- 8 GSM/UMTS/WCDMA Ports - GSM 850/900/1800/1900 MHz - WCDMA 850/1900 MHz, 850/2100 MHz, 900/2100 MHz - 2 X 10/100

- 4 GSM/UMTS/WCDMA Ports - GSM 850/900/1800/1900 MHz - WCDMA 850/1900 MHz, 850/2100 MHz, 900/2100 MHz - 1 X 10/100

- 2 GSM/UMTS/WCDMA Ports - GSM 850/900/1800/1900 MHz - WCDMA 850/1900 MHz, 850/2100 MHz, 900/2100 MHz - 1 X 10/100

- 1 GSM/UMTS/WCDMA Port - GSM 850/900/1800/1900 MHz - WCDMA 850/1900 MHz, 850/2100 MHz, 900/2100 MHz - 1 X 10/100

- 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

- 16 FXO Ports - 1 X 10/100

- 8 FXO Ports - 1 X 10/100

- 4 FXO Ports - 1 X 10/100

- 32 FXS Ports - 1 X 10/100

- 24 FXS Ports - 1 X 10/100

- 16 FXS Ports - 1 X 10/100

- 8 FXS Ports - 1 X 10/100

- 4 FXS Ports - 1 X 10/100

- 2 FXS Ports - Micro-USB port (Power) - 1 X 10/100

- 1 FXS Port - Micro-USB port (Power) - 1 X 10/100

- Module for Yeastar iPBX  S-Series / P-Series - Add 100 VoIP Users - Add 30 Concurrent Calls

- Module for Yeastar iPBX  S-Series / P-Series - 1 onboard E1/T1/PRI Port

- Module for Yeastar iPBX  S-Series / P-Series - 4 onboard module slots - 8 interfaces on the panel

- Module for Yeastar iPBX - 1 WCDMA Channel (WCDMA Voice Calls Frequencies 900/2100MHz - 850/2100MHz - 850/1900MHz)

- Module for Yeastar iPBX - 1 GSM Channel (GSM Voice Calls Frequencies 850/900/1800/1900MHz - Quad-band)

- Module for Yeastar iPBX - 2 BRI Ports (NT/TE)

- Module for Yeastar iPBX - 1 FXS Port + 1 FXO Port (Unique PSTN Fallback Function)

- Module for Yeastar iPBX - 2 FXO Ports (connect 2 analog PSTN (POTS) lines)

- Module for Yeastar iPBX - 2 FXS Ports (add 2 analog telephones)

- 300 (up to 500) Users - 60 (up to 120) Max Concurrent Calls - 24 Max Analog Ports - 24 Max BRI Ports - 6 Max GSM/3G Ports - 3 Max E1/T1/J1 Ports - 100 VoIP Trunks - Optional modules for specific...

- 100 (up to 200) Users - 30 (up to 60) Max Concurrent Calls - 16 Max Analog Ports - 16 Max BRI Ports - 6 Max GSM/3G Ports - 2 Max E1/T1/J1 Ports - 100 VoIP Trunks - Optional modules for specific...

- 50 Users - 25 Max Concurrent Calls - 8 Max Analog Ports - 8 Max BRI Ports - 4 Max GSM/3G Ports - 50 VoIP Trunks - V4: LTE SIP Trunking not supported - Optional modules for specific config.

- 20 Users - 10 Max Concurrent Calls - 4 Max Analog Ports - 4 Max BRI Ports - 1 Max GSM/3G Port - 20 VoIP Trunks - V4: LTE SIP Trunking not supported - Optional modules for specific config.

- Large 7-inch ( 800x480)  touchscreen color display - Touchscreen keyboard with choice of exp. modules - Crystal clear HD audio - Up to 24 lines with 2 dedicated line keys with LED - Dual gigabit Ethernet...

- Wireless hands free solution for GAP DECT phones - Discrete desk charger/headset holder - Range: with DECT phones, up to 120m, 60m in typical offie - Answer/End, Mute and volume controls - Up to 7 hrs talk...

- 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...

- Supported on the 6865i, 6867i and 6869i - 28 programmable softkeys with LED - 4.3" 480x270 pixel color backlit LCD display - Daisy chained with the M680i for total of up to 3 modules - Powered by the...

- Supported on the 6865i, 6867i and 6869i - 16 programmable keys with LEDs - Paper insert labeling - Daisy chained with the M685i for total of up to 3 modules - Powered by the phone; no separate power...

- Color 4.3" QVGA 480x270 pixel LCD display - Up to 12 lines with 2 dedicated line keys with LED - Magnetic Keyboard Interface - Dual GigE Ethernet Ports - DHSG/EHS headset and Expansion Module support -...

- Color 3.5" QVGA 320x240 pixel LCD display - Up to 9 lines with 2 dedicated line keys with LED - Magnetic Keyboard Interface - Dual GigE Ethernet Ports - DHSG/EHS headset and Expansion Module support - 6...

- 3.4" 128x48 pixel graphical backlit display - Up to 9 lines with 2 dedicated line keys with LED - Wideband handset and speakerphone - Dual GigE Ethernet Ports - DHSG/EHS headset and Expansion Module...

- 2,75" 128x48 pixel graphical display - Up to 2 lines with dedicated line keys - Wideband handset and speakerphone - Dual 10/100 BaseT Ethernet ports with PoE - hardware based switch - 3 Programmable...