363-206-285
Technical Specifications
10-66 Issue 3 June 2001
The DDM-2000 OC-3 Multiplexer uses synchronous, full duplex, continuous
carrier communication. Data rates of 1200, 2400, 4800, 9600, and 19,200 baud
are supported. The EIA-232-D interface is configured as DTE, using the pin
connections specified in Table 10-28.
Physical Specifications 10
Shelf Physical Characteristics 10
â– Dimensions: 8.5 in. H x 21.25 in. W x 12 in. D (Group 1 or Group 3)
Dimensions: 8.5 in. H x 21.25 in. W x 13.25 in. D (Group 4)
â– Weight (Max.): 44 lb. (20 kg)
â– Appearance: Coordinated with other equipment in the Lucent 2000 Product
Family.
Network Bay and Cabinet Mounting 10
The DDM-2000 OC-3 Multiplexer can be mounted in both ED-8C500 and
ED-8C501 network bay frames. A maximum of six shelves may be mounted in a
7-foot bay. In addition to bay mounting, the DDM-2000 OC-3 Multiplexer can be
packaged with other equipment in 80A, 80D, and 80E cabinets, 51A cabinets,
90-type business remote terminals, controlled environment vaults (CEVs), or huts.
Table 10-28. TL1/X.25 Interface — EIA-232-D Pin Connections
Pin Description
2
3
4
5
6
7
8
15
17
20
Transmitted Data
Received Data
Request to Send
Clear to Send
DCE Ready
Signal Ground
Received Line Signal Detector
Transmitter Signal Element Timing (DCE to DTE)
Receiver Signal Element Timing (DCE to DTE)
DTE Ready*
* DTE is always on when the DDM-2000 OC-3 Multiplexer is powered.