Zhone Technologies Network Device IP Routing Server Card Specifications, Uni Dce, Uni Dte, Nni

Zhone Technologies, Inc.		IMACS Product Book, Version 4
Table 24—IP Routing Server Card Specifications
	Input/Output	4 maximum (1 10-BaseT Ethernet, 3 Frame Relay Wide-Area Network)
	LAN Traffic I/O	10BaseT, 10Base2
	Frame Relay Traffic I/O	T1, E1, fT1, fE1, V.35, RS422, EIA530
	Frame Relay Port types	UNI DCE, UNI DTE, NNI
	MTU	1500 bytes
	Traffic Bandwidth	4Mbps Full Duplex
	Total Buffer Space	4 Mb DRAM
	Performance	3500 Packets Per Second
	No of PVCs	128
	Routing Table	512 entries (up to 128 static entries)
	ARP Table	100 entries (LRU)
	Card Capacity	Maximum 3 per IMACS
	Management	RFC 1315 DTE MIB, Frame Relay Service MIB, SNMP Alarm Traps per
		RFC 1215
	Connectivity	SNMP or TELNET
	LMI Options	Q.933 Annex A, ANSI T1.617 Annex D, LMI (Gang of 4), None
	Information Rates	CIR = 0 to 2048 Kb/s, Bc = 0 to 2048 Kb, Be = 0 to 2048 Kb
	Congestion Handling	FECN, BECN
	DCE Parameters	N392, T391, N393 all configurable
	DTE Parameters	N392, T391, N393, N391 all configurable
	IP subnet Topologies	Point-to-point, hub-and-spoke, fully/ partially meshed subnets, and
		unnumbered IP interfaces.

7. Low-Bit Rate Voice Server

The LBRV (Low Bit Rate Voice) Server card allows for the compression of 64Kbps digital voice channels into 8Kbps (plus overhead) digital sub-channels, and subsequently for the sub-channels to be multiplexed over one, two or three composite transmission paths over Wide Area Network (WAN) links. The LBRV Server can accept voice inputs from either analog voice ports (such as FXS, FXO, E&M) or from T1/E1 WAN links through the IMACS.

Each LBRV / ACELP (G.729) voice compression server card supports up to three composite transmission paths at speeds of 64k, 128k or 192k, by using one, two or three WAN time slots, respectively. The composite transmission paths use HDLC protocol as the transport mechanism. Users assign voice channels to one, two or three transmission paths based on the need to route those channels through the network. The composite transmission paths can be routed directly to WAN cards or to the Frame Relay Server. When routed to a Frame Relay Server (FRS), the FRS provides a FRAD function for the compressed voice frames. No Frame Relay sub-addressing is supported, so all voice channels within each composite transmission paths from the ACELP will be treated as a single PVC.

There are two models of the LBRV server cards: 830060 (8 port) and 831060 (16 port) capacities. A single IMACS chassis we can support up to 3 LBRV cards for compression of a maximum of 48 voice ports.

The LBRV card performs DTMF recognition and re-construction. This means the integrity of DTMF does not suffer from the compression/decompression processes. The LBRV card does not support MF signaling between switches. The following is a list of the Zhone Technologies LBRV key benefits:

•Simple topologies including Point-to-Point, Star and Mesh LBRV performs a compression and transport function. It does NOT perform voice switching and call routing.

•High density of channels and high volume of traffic.

•LBRV solution is competitive with high volumes of traffic. There should be many (24+) voice channels in one location.

•High reliability in mission-critical installations.

March 2001 Page 96