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Overview of Voice over IP (VoIP)
4600 Series IP Telephones
2-7
4600 Series IP Telephones 2
Dual Connection Architecture 2
Releases 1.0 and 1.1 of the 4600 Series IP Telephones use dual connection architecture to
communicate with the DEFINITY
®
or MultiVantage
TM
switch. In the dual connection architecture,
two station extensions must be administered for each telephone.
Single Connection Architecture 2
Release 1.5 and subsequent releases of the 4600 Series IP Telephones use single connection
architecture to communicate with the DEFINITY
®
or MultiVantage
TM
switch. In the single
connection architecture, only one station extension must be administered for each telephone.
Registration and Authentication 2
The DEFINITY
®
or MultiVantage
TM
switch supports the registering and authentication of 4600
Series IP Telephones using the extension and password. For further information, see Related
Documents on page 1-5.
Software 2
As shipped from the factory, the 4600 Series IP Telephones may not contain sufficient software for
registration and operation. When the phone is first plugged in, a software download from a TFTP
server is initiated. This gives the phone its proper functionality.
For downloads of software upgrades, the PBX provides the capability for a remote restart of the
4600 Series IP Telephone. As a consequence of restarting, the phone automatically restarts
reboot procedures. If new software is available, a download will result.
WAN Considerations 2
QoS is harder on a WAN than a LAN. A LAN assumes no bandwidth concerns. A WAN assumes a
finite amount of bandwidth. Therefore, QoS considerations are more significant when the IP
telephony environment includes a WAN. In addition, there are administrative and hardware
compatibility issues unique to WANs.
DHCP and TFTP Servers 2
The DHCP server provides the following information to the 4600 Series IP Telephone:
■ IP address of the 4600 Series IP Telephone
■ IP Address and port number of the TN799 board on the DEFINITY
®
or MultiVantage
TM
Call
server. On the call server, the standard port number is 1719.