Installation guide

Synapse Installation Guide Back to Contents
Installation 15
Planning Your System and Network Configuration
This section describes several important configuration options that you should be aware
of before you install the Synapse system. These options include Operation Mode (Call
Appearance versus Line Appearance), IP addresses and connectivity, extension number
assignments, analog bypass lines and analog telephones in the Synapse system.
Network Requirements
 A switched network topology is recommended for your LAN (using standard
10/100 Ethernet switches that carry traffic at a nominal rate of 100 Mbit/s).
 The office LAN infrastructure should use Cat.-5 (or better) cable.
 The LAN connections to Synapse devices should all be wired. However, wireless
connections to other devices (such as laptops) in your office network that are not
part of the Synapse system will not impede performance.
 All devices in the Synapse system must reside on a single subnet.
 A DHCP server is recommended and must be on the same subnet as the Synapse
system so that IP addresses can be auto-assigned. In most cases, your network
router will have a Dynamic Host Configuration Protocol (DHCP) server that will
automatically assign IP addresses to Synapse devices in the system. By default,
Synapse assumes that this automatic assignment will occur.
If no DHCP server is present, you can assign static IPs. If you do not have a DHCP
server or do not manually assign static IPs, you will not be able to access the
Synapse WebUI and/or enable automatic time updates from an NTP server.
Synapse devices will self-assign link-local IP addresses for all voice
communication in addition to any DHCP or static IPs that are assigned for
management purposes. For more information, see “Appendix A: IP Addresses and
Connectivity” on page 143.
 Unless you want to manually set the Synapse clock and manually upgrade
Synapse software, an Internet connection to the LAN is required.
 A DNS server is recommended to resolve the path to the Internet and to the AT&T
server for software upgrades.
 If a routing path to the Internet is not available, the system administrator can
download the upgrade files and use the WebUI to upgrade the software
manually.
 For users whose computers require a GigE Ethernet frame rate (a gigabit per
second), use separate Ethernet connections for the Deskset and the computer.
The Ethernet connection through a Deskset is limited to 100 Mbits/s.
SIP Gateway Static IP Configuration
If your SIP service provider requires static registration for a SIP Gateway (or if you are
using Remote Sites), please ensure that:
 The SIP Gateway uses a consistent IP address, preferably via a static mapping in
the DHCP Server. If this is not possible, you can configure a static IP address
using the SIP Gateway’s front panel.