Nortel 1000 Installation And Commissioning Manual page 53

The ISP1100 Signaling Server, as shown in Figure 5 and described in Table
2, provides signaling interfaces to the network using software components
that run on a real-time operating system. You can install ISP1100 Signaling
Servers in a load-sharing redundant configuration for higher scalability and
reliability.
The ISP1100 Signaling Server is equipped with several software
components:
• IP Phone Terminal Proxy Server (TPS)
• H.323 Signaling Gateway (virtual trunk)
• H.323 Gatekeeper
• SIP
• Network Routing Service
• Element Manager web server
Figure 5
ISP1100 Signaling Server
Table 2
ISP1100 Signaling Server profile (Part 1 of 3)
Property
Order Code
Height
Communication Server 1000E
System components
Description
• NTDU27
• 1 U (1 U = 1 3/4 inch or 4.4 cm)
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Installation and Commissioning