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SIP Settings 48
SmartLink 4050 Series Getting Started Guide 5 • Using the configuration menu
Park Server & Presence Server (Model SL4050/B12/E only)
• Park Server Domain Name / IP Address: Park server host name or IP address.
• Park Account:The number of the parking area on Park server
• Presence Server Domain Name / IP Address: Presence server host name or IP address.
Other Settings
This section should be configured by network administrators.
• Session Timer: The time interval in which the phone periodically refresh SIP sessions by sending repeated
INVITE requests. These INVITE requests allow the user agent or proxies to determine the status of the SIP
session.
• Media Port: Real-time Transport Protocol port number. Provides end-to-end transfer of data with real-time
audio.
• Prack: A SIP method which is applied to the condition of acknowledging to the provisional responses like
180 Ringing. Select Enable for a more reliable connection.
• Session Refresher:
- Select None to disable SIP session timer support.
- Select UAC to initiate SIP request.
- Select UAS to receive SIP request and then return a response.
• Session Timer Method: Select SIP request method. Default method is Invite.
• UDP/TCP: Select SIP signal transmission method. Default method is UDP.
• Register with Proxy: When “Set messages via Outbound Proxy” is enabled, all the SIP requests including
Register will be sent through Outbound Proxy. Enable the option will against the rule and send SIP Regis-
ter directly to the Registrar.