User guide

Chapter 3: MultiVOIP Software
Multi-Tech Systems, Inc. MVPGSM 27
Call Signaling
The MultiVOIP GSM utilizes the SIP protocol for communication with other VOIP units. Additional details for all
settings are found in later chapters.
Actions:
• Configure the Call Signal type
o SIP
 Signaling Port (default is 5060)
 Use SIP Proxy (enable to work with a proxy server)
 Allow Incoming Calls Through SIP Proxy Only
 SIP Proxy Parameters
• Enter information for Primary and any Alternate Proxy servers
• Append SIP Proxy Domain Name in User ID
• Enter Subscriber number, Username and Password
• Re-Registration Time (in seconds)
• Proxy Polling Interval (time between proxy server connect attempts)
• TTL Value (in seconds)