The GXW410x FXO gateway series enables businesses of all sizes to
create and deploy a VoIP and analog hybrid solution. Make deployments
easy by seamlessly connect multiple locations and all devices within an
office to any hosted or on premise IP PBX network. Constructing a
high-end and interoperable communications network with your analog
devices is easier than ever. The GXW4104 is ideal for small to medium
business that are looking to integrate existing PSTN lines with an IP
PBX system or with an existing traditional phone system. The Grandstream
GXW4104 Gateways has 4 ports available for connection with 2 10/100
Mbps network ports. It has comprehensive codec support, caller ID,
flexible dial plans and security protection to make it easier to
identify people and managing them properly. It has advanced security
protection with SRTP and is designed and tested for full
interoperability with leading IP-PBXs, sof-switches and SIP-based
environments. If there is any power related issue, the machine
automatically goes to PSTN Failover.