User guide

Chapter 3: Software Installation
Multi-Tech Systems, Inc. 19
Call Signaling
There are three choices for Call Signaling: H.323, SIP and SPP. It is best to select one of these as the protocol to
be used, rather than mixing them. Single Port Protocol (SPP) is a non-standard protocol created by Multi-Tech
that allows dynamic IP allocation. Generally, the default settings will work for most users and the individual
parameters may be changed if the need arises. Additional details for all settings are found in Chapter 4.
Figure 3-9: Signaling Protocols