Lucent Technologies Release 8.2 manual IP-Interface, Tie-Trunk Circuit Packs, Netcon si only

DEFINITY Switch Connectivity		1 Networking Overview
	C-LAN
	The C-LAN circuit pack (TN799B) enables signaling data to be transmitted via the
	TCP/IP protocols across a LAN or WAN. Signaling types include call setup and
	teardown, registration of IP softphones, TSCs, QSIG and DCS signaling.
	The C-LAN circuit pack provides the data link interface between the switch processor
	and the transmission facilities. C-LAN prepares the signaling information for TCP/IP
	transmission over one of two pathways — either via an Ethernet LAN or a point to
	point protocol (PPP) connection — depending on how the data link is administered. If
	the link is administered for an ethernet connection, the signaling data is sent out on a
	10Base-T network, which is connected directly to the C-LAN ethernet port. If the link
	is administered for a PPP connection, C-LAN inserts the signaling data on the TDM
	bus for subsequent inclusion (via the switching fabric) in the same DS1 bit stream as
	the voice transmissions.
	The C-LAN board can be inserted in any available port slot. Up to 10 C-LAN boards
	can be used in the DEFINITY ECS R8r and R8si models — up to 2 C-LAN boards
	can be used in the R8csi model. Each C-LAN board has 17 ports; port 17 is used for
	the LAN interface and the other 16 can be used for PPP connections. Up to 508
	sockets are available on each C-LAN circuit pack.
	IP-Interface
	The IP Interface circuit pack (TN802B) enables two switches to transmit voice data
	between them over an IP network. The TN802B normally operates in the MedPro
	mode, which enables support of applications that comply with the H.323-v2
	protocols. It can also operate in the IP Trunk mode to support R7 IP trunks that
	emulate DS1 connections.
	Tie-Trunk Circuit Packs
	The tie-trunk circuit packs provide an interface between the switch and the
	transmission facilities for voice data, call-signaling data and data. See System
	Description, 555-230-211 for descriptions of tie-trunk (and other) circuit packs.
Pre-R7 circuit packs	PI (si only)
	The PRI functionality of the Processor Interface (PI) board (TN765) is replaced by
	the NetPkt board (TN794) in R7. The PI board will no longer be shipped with new

systems starting with R7. The PI board is needed in switches upgraded to R7 and later releases only if existing X.25 connections are retained. The PI board has 4 data links that can connect to DS1 tie trunks over the TDM bus for interface to DCS or ISDN applications. The PI board terminates BX.25 and ISDN-PRI link access procedure on the D-Channel (LAPD).

NETCON (si only)

The network controller (NETCON) board (TN77B) is replaced by the NetPkt board (TN794) starting in R7. For pre-R7 systems, NETCON provides an interface to the processor for the port circuit packs on the TDM bus.

Administration for Network Connectivity
555-233-504 — Issue 1 — April 2000	CID: 77730	5