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VoIP & IP Telephony

VoIP Gateways and ATAs

Grandstream and Fanvil gateways that connect analog phones, fax machines and PSTN lines to a SIP system. Choose HT analog telephone adapters with 1 to 8 FXS ports, FXO gateways, GXW FXS gateways up to 48 ports or an E1/T1 digital gateway.

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Choosing a VoIP gateway or ATA

  • FXS adapters and gateways: connect analog phones and fax machines to a SIP system, from one port on a desktop ATA to 48 ports in a rack unit.
  • FXO gateways: connect existing PSTN lines to a SIP PBX.
  • E1/T1 digital gateways: connect digital trunks to a SIP network.

Count the analog devices or lines in use today and choose a port count with spare capacity. For fax, look for T.38 support, and for a line that works during a power cut, look for an FXS port with lifeline. Check whether the unit takes PoE or an external adapter, and whether it can be managed centrally across several sites.

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Tell us what it is for and where it goes, and we suggest models. Have a list of models and quantities? Request a quote.