User guide

Chapter 4 – Configuring Your MultiVOIP
MultiVOIP® Voice/Fax over IP Gateways 63
SPP
Multi-Tech developed Single Port Protocol for dynamic IP addressing when the feature is set to Registrar/Client
mode. The other setting, Direct mode, has IP addresses assigned to the gateways. The table below describes
fields in the general SPP Call Signaling window. The –SS models do not support SPP.