Lucent Technologies DEFINITY ProLogixTM Solutions 555-235-100 - Manual (Page 35)

2 Telephones for the Global Marketplace
DEFINITY ProLogix Solutions Release 2 Overview 555-235-100 Issue 2 June 1999 2-3
Digital DCP Telephones
Digital telephones using the Digital Communications Protocol (DCP) employ digital transmission for
integrated voice and data signals and control signals. Transmission is over a connection consisting of one or
two pair of wires. However, the 7400 Series telephones require four pair of wires. Each connection supports
one signalling channel and two information (voice and data) channels.
DCP telephones are used most effectively by those who have a high volume of calls, require access to
multiple applications or databases, use switch features heavily, or require messaging services. They can be
used with personal computers to expand their capabilities.
These telephones provide the full range of DEFINITY ECS features on your desktop. In addition to
multiline and multifunction capabilities, they provide access to integrated voice and data applications and
messaging services. Some models include displays. DCP telephones can actually save you money by
reducing the number of lines, modems, and ports that would normally be needed for analog facilities.
The following DCP telephones are available for sale:
• 6400 Series digital telephones
• 8400 Series digital telephones
6400 Series Digital
Telephones The 6400 Series digital telephones are versatile 2-wire DCP telephones that support
all of the key/hybrid features of DEFINITY ProLogix Solutions. These telephones
have a new, global design and include the following additional features:
• date and time display
• a feature button that allows switchhook control of a headset