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Introduction
The EXTender 4000 provides remote voice access to a corporate system for a single remote user.
Remote users can connect to a PBXgateway™ via a 10Base-T Ethernet connection using IP packet
transmission.
The remote users' telephones connect to the EXTender 4000 via an RJ-11 telephone jack. The user's
telephone traffic is placed in IP packets and sent out to the corporate LAN and then to the PBXgateway
via a 10Base-T Ethernet connection in the PBSX gateway.
The EXTender 4000 provides a choice of three voice compression algorithms: G711, G729A, and G726
(24 and 32 Kbps ADPCM options) to reduce bandwidth requirements. The EXTender 4000 extends the
full functionality of the system to a remote location, via IP over a LAN.
All voice traffic and signaling information from the digital telephone system is packetized by Remote Voice
TM
Protocol (RVP
). These packets are encapsulated into IP packets and sent out over the Ethernet. The
voice packets can share the Ethernet network with other common data devices. The remote user can also
connect a PC to the LAN through an RJ-45 Ethernet jack on the EXTender 4000, which acts as a hub.
The voice and signaling traffic is transmitted over the LAN between the EXTender 4000 at the remote
location and the PBXgateway at the central location. At the Gateway, the packets are converted back into
the system protocol and sent to the system via an RJ-21 cable.
IP-based products utilize Voice over IP (VoIP) technology to deliver remote voice solutions. The voice
quality of these solutions depends on variables such as available bandwidth, network latency, and Quality
of Service (QoS) initiatives, all of which are controlled by the network and internet service providers.
Because these variables are not within our control, we cannot guarantee the performance of the user's
IP-based remote voice solution.
EXTender 4000 Universal Quick Installation Guide
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