3Com DSA-3CV1001-02 service manual Pbx

VCN Access Point Features 13

and data to the SuperStack II 1100 Switch. The VCN AP also splits voice and data in the direction from the VCN AC. Data is sent up to 10 Mbps full duplex.

The solution also works with the VCN Services Switch 10 and the SuperStack II Switch 3300.

■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. Refer to Figure 2.

Figure 2 Transfer of Ethernet Frames to VDSL frames in VCN System

PBX

	Ethernet fram e
	H D LC fram e
	VD SL fram e
Ethernet	D ata frequency
fram es
VCN AP
	Voice call
Ethernet
	PO TS line

Voice frequency

Existing PO TS m etallic pair line

Voice calls

PO TS lines

	VCN AC
Ethernet	Ethernet
fram es
	Ethernet sw itch

■The VCN AP supports 4-wire telephone cable. The additional 2 wires which exist in every telephone cable will remain available for an additional extension. In telephone sets that have two RJ-11 jacks, the