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Model 57i CT IP Phone User Guide 198
Additional Features
UPnP Mapping Lines (for remote phones)
Universal Plug and Play (UPnP) is a standard that uses Internet protocols to enable
devices to be plugged into a network and automatically know about each other. With
UPnP, when a user plugs a device into the network, the device configures itself,
acquires a TCP IP address, and uses a discovery protocol based on the Internet's
HTTP or HTTPS URL to announce its presence on the network to other devices.
This method of device discovery on a network is called “Universal Plug and Play” or
UPnP. If you enable UPnP, and the phone is discovered on the network, port
mappings are set up between the phone and the Internet Gateway Device (IGD) in
your network. The phone controls the opening, closing, and polling of ports on the
IGD. HTTP and SIP use a single port each. RTP/RTCP uses a range of ports.
You can enable the UPnP mappings to specific lines on your phone. You set this
configuration using the Aastra Web UI at Basic Settings->Preferences->UPnP
Mapping Lines.
Configuring UPnP Mapping Lines
Use the following procedure to configure the UPnP mapping lines on the IP phone.
1. Click on Basic Settings->Preferences->General.
2. The "UPnP Mapping Lines" field is set to 0 by default. If required, change the
setting to a specific line by selecting a line from the list. Valid values are 0 through
10. The line you select is the line that your remote phone uses to perform Univer-
sal Plug and Play on the network you are connecting to.
3. Click to save your settings.
Note: UPnP must be enabled on your remote phone before you can configure
the UPnP mapping lines. Contact your System Administrator for more
information.
Aastra Web UI