參數(shù)資料
型號: T7264
英文描述: T7264 U-Interface 2B1Q Transceiver
中文描述: T7264 U型接口2B1Q收發(fā)器
文件頁數(shù): 29/54頁
文件大?。?/td> 876K
代理商: T7264
Data Sheet
April 1998
T7264 U-Interface 2B1Q Transceiver
Lucent Technologies Inc.
29
Minimal Example
The simplest application of the T7264 in an NT1 is to assume only cold starts and always return an unable-to-com-
ply for the eoc message. In this situation, the K2 interface signals are configured as shown in Table 22.
Table 22. Minimal Implementation
Note that this is only an example and not a valid T1.601 configuration. However, it could be useful for laboratory
testing.
Bit Name
B1, B2
D
Description
Minimal State
T
T
Data In
000
Description
ISDN 64 kbits/s B1, B2 Octet
ISDN 16 kbits/s D Bits
Transparent
Transparent
a
Address
Data or Message
Information
Activation
Primary/Sec. Power Status
Received Far-end Bit Error
NT in Test Mode
Cold Start Only
Reserved
NT Address
Message
Unable to Comply
Transceiver Active
Always True
Not Applicable
Never Used
Always Cold Start
Never Used
dm
i
act
1
10101010
INFO3
1
1
1
1
1
Data Out
ps1, ps2
rfebe
ntm
cso
R
dea
ccrc
istp
lpbk
afrst
ldea
xpcy
Deactivation
Corrupt the Outgoing crc
Initiate Start-up
Loopback
Reset (Adaptive Filter Reset)
Local Deactivation
Transparency
1
1
0
1
0
0
Ignore
Never Used
Always Starting
Never Used
Never Used—RESET Pin Used
Never Used—Always Active
Received K2 act Bit
NOT act
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