Vodavi XTS-IP, Installation Manual

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3-78 IP Phones and Related Items
Chapter 3 - System Installation
XTS-IP - Installation Manual December 2005
Nomad Remote Services Gateway Module
Modern businesses often have remote office locations consisting of a single employee home
office to offices with a number of employees. These remote locations are served by
independent telecommunications systems, which do not easily provide continuity of service.
Services to the corporate telecomm system are typically via a DISA type facility and the
remote user is excluded from services to many of the system’s resources and functionality.
While telecomm systems may be networked over PSTN or leased line facilities to provide
remote connection, such connections are expensive and do not incorporate protocols to
efficiently provide interconnection to a small number of remote users. Nor do these protocols
allow for the simple transfer of the detailed information needed between the two end-points
necessary to support today’s complex communication features.
A major advantage of VoIP in the telecomm market is the ability of the protocol to carry out a
transparent remote connection efficiently for even a small number of remote users.
The Nomad Remote Services Gateway Module ( Nomad RSGM ) permits remote users and
interfaces with services to the XTS-IP System over broadband IP networks. Remote Services
are implemented with the XTS-IP employing VoIP channels of the VoIP card to communicate
with remote keysets and Nomad RSGM s. A typical remote configuration is shown in
Figure 3-50 . Note that the XTS-IP can service multiple remote keysets and Nomad RSGM s
simultaneously.
Nomad RSGM hardware resources include:
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One WAN connection port (RJ-45: 10/100 Ethernet port) – Auto MDI, MDIX switching
feature
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One PC connection port (RJ-45: 10/100 Ethernet port)
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One IP phone connection port (RJ-45: 10/100 Ethernet port) – Power feeding capable
†
One analog CO port (RJ-11)
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One analog SLT port (RJ-11)
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One BGM port
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One Alarm/Doorbell contact
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Two dry relay contacts
The Nomad RSGM includes the Ethernet port and MAC for the 10/100 Base-T Ethernet
interface as well as packet voice processing functions. The WAN connection Ethernet port has
an auto MDI, MDIX switching feature; therefore, both straight cable and cross cable can be
used.
IP Addressing Support
The gateway’s WAN port can function as a Dynamic Host Configuration Protocol (DHCP)
client or can use a manually-assigned IP configuration.
The gateway’s LAN side includes a built-in DHCP server, which can provide IP addresses for
multiple LAN hosts. The DHCP server is enabled by default, and can be configured by the
installer.