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About Your DualFlow DSU
1-73615-A2-GB20-20 December 1996
Table 1-4
4-Wire Switched 56 DBM Technical Specifications
Specifications Criteria
APPLICATION Full- or half-duplex data transmission via 56 kbps switched services
compatible with AT&T, MCIr, and US SPRINTr using 4-wire switched
access to a local exchange carrier (LEC) or an inter-exchange carrier
(IEC)
COMMUNICATION LINE A dedicated 4-wire access or a local exchange carrier 4-wire switched
access
PORT RATES Async or Sync rates: 56, 48, 38.4, 32, 28.8, 19.2, 18.8, 18.0, 16.8, 14.4,
12.0, 9.6, 9.2, 8.4, 7.2, 4.8, 4.4, 4.0, 2.4, 2.0, and 1.2 kbps
Other asynchronous rates (e.g., 150, 300, 600, and 1800 bps) can be
obtained through oversampling
Asynchronous rates support CCITT V.14 extended rate range at
8 to 12 bits per character
, including the
start
and
stop
bit (+2.3, –2.5
percent overspeed/underspeed compensation at 10 bits per character)
DATA RATES 56 kbps
(Note that the 4-wire Switched 56 DBM or 3600 Series DBM-S
uses proprietary rate adaption to support data rates of less than
56 kbps.)
DBM COMPATIBILITY If Call Setup is set for Callback or Password security
, then the
device is compatible with a 3600 Series Switched 56 DBM only.
If Call Setup is set for Alarm or None, then any Switched 56 kbps
terminal interface unit (TIU) can be used.
SWITCHED 56 KBPS
NETWORK INTERFACE
3615 DualFlow DSU
3616 DualFlow DSU
8-pin modular jack, USOC SJA56
(One or two) 50-pin connector, USOC SJA57
NETWORK COMPATIBILITY AT&T Technical References 41458 and 61330