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Chapter 4: Configuring your VOIP
Multi-Tech Systems, Inc. 59
SPP
Single Port Protocol was developed by Multi-Tech to allow for dynamic IP addressing when it is set to
Registrar/Client mode. The other choice, Direct mode, has IP addresses assigned to the gateways. The
table below describes all fields in the general SPP Call Signaling screen. The –SS models do not support
SPP.
Figure 4-17: SPP call signaling