14 O
VERVIEW
Figure 2
Transfer of Ethernet Frames in
Visitor and Community Network
The user’s Ethernet frames are encapsulated in HDLC frames carried in
VDSL. Voice and data traffic are carried in their respective frequency
ranges in the wire pair that connects the VCN AP to the VCN AC. Voice
traffic, including facsimile and analog modem traffic, are not modified.
Figure 3
shows the front panel of the VCN AC. The 24 LAN ports of the
VCN AC are connected to the Ethernet switch. Each port is an RJ-45
connector.
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24 Ports Concentrator
Data frequency
Existing POTS metallic pair line
Ethernet
VCN AC
PBX
Ethernet switch
Voice frequency
VDSL frame
HDLC frame
Ethernet frame
Ethernet
POTS line
POTS lines
Voice call
Voice calls
VCN AP
Ethernet
frames
Ethernet
frames