Site Planning For Systems In An Ftgateway Group - NEC Express5800/320Ma Planning Manual

Site Planning for Systems in an ftGateway Group

Multiple Express5800/320Ma systems at a site can share a single telephone
connection to the ASN by implementing an ftGateway group. Unless VTMs are
installed in each system, the systems in the group must be connected to a single
physical Ethernet subnetwork. One system acts as a gateway for ASN connectivity.
This gateway system requires an analog telephone line that connects to the modem.
Other systems in the gateway group, called gateway slaves, connect to the gateway
system over the network. In this case, Ethernet connections are required for each
system, but only two analog telephone lines for each site are required.
Members of an ftGateway group:
•
Are limited to a maximum of 20 Express5800/320Ma systems.
•
Must connect to the same subnetwork through system Ethernet ports, ports of
Ethernet adapters, or VTMs. An ftGateway group that contains
Express5800/320Ma 3.2 GHz, 3.6 GHz, or Dual-Core systems can consist of one
of the following:
– Slave systems with no remote management adapter in a group with an
ftGateway system that has VTMs
– Slave systems that have VTMs in a group with an ftGateway system that has
VTMs
Using VTMs provides the highest level of manageability by allowing the system to
be serviced even when the operating system is not operational.
2. If your system will be configured with VTMs whose
network ports are connected to a network with
Internet access, your system will not have a modem
installed for ASN support, and the second telephone
line will not be necessary.
3. A dedicated phone line provides the most reliable
service. ASN calls routed through a PBX might be
slow due to the load on the PBX, or might not
complete successfully because the calls can become
disconnected. If you must use a PBX, do not route the
telephone extension through a switchboard; instead,
provide a direct-dial analog number.
N O T E
You cannot mix VTMs and ftServer Access Adapters in
the same ftGateway group. ftServer Access Adapters are
Site Planning for Systems in an ftGateway Group
Network and Telephone Line Planning 6-3