System information

FCD 901 48
Issue R2A, 07.2009
XMP1 Release 5.5 System Description
Ethernet Functions
Aastra Proprietary Information Page 4-5
Auto-Negotiation
The Auto-Negotiation function enables the Ethernet port and Ethernet unit
connected to the latter to select the Ethernet connection parameters
automatically based on the features of the equipment units connected.
These parameters include - for example - the transmission rates possible
as well as full-duplex or half-duplex operation. In addition, the user can
narrow down the auto-negotiation process by confining the specified
features of the port.
Auto-MDIX
The Auto-MDIX (Automatic Medium-Dependent Interface Crossover)
function permits the automatic adaptation of the transmit and receive line of
a port, i.e. of the Ethernet cable connected (patch cable/cross-over cable).