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參數(shù)資料
| 型號： | T7264 |
| 廠商： | Lineage Power |
| 英文描述： | U-Interface 2B1Q Transceiver(U接口 2B1Q收發(fā)器) |
| 中文描述： | U型接口2B1Q收發(fā)器（ü接口2B1Q收發(fā)器） |
| 文件頁數(shù)： | 33/54頁 |
| 文件大小： | 876K |
| 代理商： | T7264 |
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Data Sheet
April 1998
T7264 U-Interface 2B1Q Transceiver
Lucent Technologies Inc.
33
Applications
(continued)
Figure 24 shows a digital pair gain application with the T7264 providing the U-interface. In this system, the U-inter-
face is used as a digital pipe to multiplex two analog voice lines onto the B channels. Thus, one twisted pair can
provide two analog lines. The T7270 forms the interface between the microprocessor, the K2 bus, and the codecs.
The T7121 can be used for HDLC formatting on the B or D channels to provide enhanced features. The divider pro-
vides the 2.048 MHz clock for the codecs, which are interfaced to the TSI via its CHI ports. The codecs and battery
feeds provide the analog interface to the telephones.
5-5181
Figure 22. Loop Application
5-5182
Figure 23. 2-Wire Terminal Application
5-5183
Figure 24. Digital Pair Gain Application
2-WIRE 2B1Q
U-INTERFACE
2-WIRE 2B1Q
U-INTERFACE
U
NT
U
LT
U
LT
SWITCH
PBX
or
NT1
4-WIRE S/T
U
NT
2-WIRE
2B1Q
U-INTERFACE
MICRO-
PROCESSOR
T7270
K2
T7121
HDLC
T7513B
CODEC
T7121
HDLC
HANDSET
D
B1
B2
DATA
T7264
CHI
TRANSFORMER/
PROTECTION
U-INTERFACE
2754H/
521A
2B1Q
T7264
TSI
T7270
HIFI-64
T7121
10.24 MHz
K2 INTERFACE
CODEC
CODEC
T7513B
BATTERY FEED
ANALOG INTERFACE
BATTERY FEED
LB1276AF
4TH CHI
MICROPROCESSOR
RS232C
FOR
MAINTENANCE
MONITOR TERMINAL
ASYNC DATA PORT
DIVIDER
2.048 MHz
CHI
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