Quick Eagle Networks DL3800E manual Overhead Functions, DTE Intf, Lca Tx Lca

2

TX_

DTE

INTF

	R
	X
RX_	F
DTE	I
INTF	F
	O

T

X

F

I

F

O

RX

LCA

TX LCA

IMUX Framer

IMUX Buffer

IMUX Buffer

IMUX Buffer

IMUX Buffer

E1 Framer

E1 Framer

E1 Framer

E1 Framer

IMUX Framer

IMUX Framer

IMUX Framer

IMUX Framer

E1 TX Int.

E1 TX Int.

E1 TX Int.

E1 TX Int.

E1 Framer & RX Int.

E1 Framer & RX Int.

E1 Framer & RX Int.

E1 Framer & RX Int.

Figure 2-3 DL3800E Unit Functional Schematic

Overhead Functions

The overhead functions consist of a controller, front panel, two RS232 communication interfaces (terminal and network management), and a power supply.

The controller function is performed by a microprocessor on the main board. The controller collects E1 statistics. It also processes E1 alarms and performance monitoring information, as well as supporting unit configuration, test and maintenance activities. Finally the Controller block supports the front panel display, terminal port, and SNMP port interfaces.

The front panel consists of a 16-character vacuum fluorescent display,

4-key keypad, and LEDs. This panel can be used to provision the unit, run diagnostic tests, or access performance statistics.

The serial ports are RS-232C compatible ports with one port supporting a menu driven ASCII terminal interface, and the other port providing access to the built-in SNMP agent functionality.

The DL3800E unit can be ordered with DC or AC power supplies and the built-in power supply has a range of 110 to 240 VAC and -40 to -75 VDC.

2-6 DL3800E Inverse Multiplexer User’s Guide — July 9, 2001