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M
MAC Address
Media Access Control address - specific, unique hardware address specified for each individual single network card used in the whole world. This means that the network card is unique and can be controlled and detected detected by the network without any problems.The IP addresses on the TCP/IP network are always mapped to the respective MAC address.
MSN
Multiple Subscriber Numbers - multiple telephone numbers where an ISDN PTMP connection can be reached. The MSN is the part of the phone number without a local prefix.

COMfortel 1400 IP/2600 IP/3600 IP - Firmware V2.8 - Advanced Information V08 12/2020