Telephony Gateways
AT-VP504E FXS
AT-VP504E FXO
Voice over IP for LAN and WAN
VoIPtalk
The AT-VP504E FXO PSTN/IP Gateway
The AT-VP504E FXO (Foreign Exchange Office) unit supports up to four analogue connections to the Public Switched Telephone Network
(PSTN), providing a PSTN gateway facility for IP networks. A number of PSTN gateways may be installed on an IP network, at different
locations. When an IP voice call needs to be ‘broken out’ to the PSTN network, the PSTN gateway nearest the destination can be used.
In this way, potentially long-distance calls can be turned into ‘local’ calls and high telco charges can be avoided. Alternatively, incoming
calls from the PSTN can be routed through the AT-VP504 FXO for connection to telephones attached to AT-VP504 FXS units on the IP
network, ensuring that legacy compatibility is maintained. ‘Hop-on’ and ’hop-off’ PSTN gateways can be used to allow PSTN calls to
locally access the corporate IP network, be routed internationally over IP, then break back out through another PSTN gateway at the
destination, as a local call.
The AT-VP504E FXS Telephony/IP Gateway
The AT-VP504E FXS (Foreign Exchange Service) connects up to four conventional telephones or G3 fax machines to a Local
Area Network with access to an intranet or the Internet to permit high-quality, full-duplex, audio/fax communications over IP
Networks. Allied Telesyn’s AR series of routers can provide the gateway required to connect to the Internet or corporate IP
wide area network (WAN), supporting quality of service (QoS) features designed to ensure optimum voice quality. The AT-VP504E
FXS performs all required IP telephony tasks in one compact standalone enclosure. It digitises the audio signal coming from
the telephone or fax and then compresses and packetises this for transmission over the TCP/IP network.
VoIPtalk - Voice over IP Networking for the Enterprise
VoIPtalk is Allied Telesyn’s Voice over IP networking solution for the enterprise, scaling from the smallest remote office to the busiest
central site. VoIPtalk components include telephone/IP gateways, PSTN/IP gateways and the management software required to control the
operation of these networks.VoIPtalk is designed to dramatically reduce telecommunications costs, since calls are re-routed through data
networks instead of standard telephone networks. Outlay is minimal as VoIPtalk fully utilises existing telecommunications equipment and
IP data networks. VoIPtalk products interwork seamlessly with Allied Telesyn’s comprehensive range of wide area network routers.
