參數(shù)資料
型號(hào): T7256A
英文描述: Compliance with the New ETSI PSD Requirement
中文描述: 符合新的ETSI PSD的要求
文件頁數(shù): 14/116頁
文件大小: 1056K
代理商: T7256A
Data Sheet
January 1998
T7256 Single-Chip NT1 (SCNT1) Transceiver
10
Lucent Technologies Inc.
Application Overview
The T7256 is intended for use in ISDN networks as part of a 2-wire to 4-wire converter (NT1) or as part of a termi-
nal adapter (TA), providing 2-wire termination of the network with available voice and/or data ports. Local switching
of terminal voice/data is also supported by the T7256. Figure 3 shows the NT1 and TA applications. See Using the
T7256 in a Combination TE/TA Environment in the Application Briefs section for a detailed explanation of an appli-
cation that has both TE and TA functions.
5-2293 (C)
Figure 3. Applications of T7256
T7256
4-WIRE
S/T
2-WIRE
2B1Q
ISDN LINE
CARD
LT
NETWORK TERMINATION (NT1)
SWITCHING SYSTEM
T7256
VOICE/DATA
PORTS
2-WIRE
2B1Q
ISDN LINE
CARD
LT
TERMINAL ADAPTER (TA)
VOICE/
DATA
LOGIC
ISDN
TE
(TERMINAL
EQUIPMENT)
TERMINAL
(e.g., RS–232)
AND POTS
CONNECTIONS
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