Nortel BCM50 2.0, Installation Manual

Page: 42 / 86

42 Chapter 6 IP telephone overview
NN40020-309 NN40020-309
• Scalability . A future-proof, flexible, and safe solution, combined with high reliability, allows
your company to focus on customer needs, not network problems. Nortel internet telephony
solutions offer hybrid environments that leverage existing investments in Meridian and Norstar
systems.
• Increased customer satisfaction . Breakthrough e-business applications help deliver the
top-flight customer service that leads to success. By providing your customers with rapid
access to sales and support personnel via telephone, the Web, and e-mail, your business can
provide better customer service than ever before.
IP telephones and VoIP trunks
This section describes two similar applications for IP telephony on the BCM50 2.0 system: IP
telephones and VoIP trunks. These applications can be used separately or together as a network
voice/data solution.
Refer to the information under the following headings:
• "IP telephones"
• "VoIP trunks"
IP telephones
IP telephones offer the functionality of regular telephones, but do not require a hardwire
connection to the BCM50 2.0. Instead, they must be plugged into an IP network which is
connected to the through the integrated interface (LAN card) on the BCM50 2.0.
Calls made from IP telephones through the BCM50 2.0 can pass over VoIP trunks or across Public
Switched Telephone Network (PSTN) lines.
Nortel provides two types of IP telephones. The IP telephones are wired to the IP network using
Ethernet, in the case of the IP Phone series of telephones, or are accessed through your desktop or
laptop computer, as in the case of the IP Software Phone 2050.
VoIP trunks
VoIP trunks allow voice signals to travel across IP networks. A gateway within the BCM50 2.0
converts the voice signal into IP packets, which are then transmitted through the IP network to a
gateway on the remote system. The device at the other end reassembles the packets into a voice
signal. H.323 trunks support private networking between BCM50 2.0s. H.323 trunks can support
connections to a number of different types of equipment, including the Meridian 1 (running IPT),
Succession 1000/M, DMS100 switches, and SL100 switches, and trunk applications.
Creating the IP telephony network
The following explains the components of the BCM50 2.0 system and the devices it interoperates
to create a network.