TP3404V Quad Digital Adapter for Subscriber Loops (QDASL)
Product Details:
| Type | Drive IC |
|---|---|
| Application | Computer |
Detailed Product Description
TP3404V Quad Digital Adapter for Subscriber Loops (QDASL)
The TP3404 is a combination 4-line transceiver for voice
and data transmission on twisted pair subscriber loops, typically
in PBX line card applications. It is a companion device
to the TP3401/2/3 DASL single-channel transceivers. In
addition to 4 independent transceivers, a time-slot assignment
circuit is included to support interfacing to the system
backplane.
Each QDASL line operates as an ISDN ``U'' Interface for
short loop applications, typically in a PBX environment, providing
transmission for 2 B channels and 1 D channel.
Full-duplex transmission at 144 kb/s is achieved on single
twisted wire pairs using a burst-mode technique (Time Compression
Multiplexed). All timing sequences necessary for
loop activation and de-activation are generated on-chip.
Alternate Mark Inversion (AMI) line coding is used to ensure
low error rates in the presence of noise with lower emi radiation
than other codes such as Biphase (Manchester). On
Ý24 AWG cable the range is at least 1.8 km (6k ft).
and data transmission on twisted pair subscriber loops, typically
in PBX line card applications. It is a companion device
to the TP3401/2/3 DASL single-channel transceivers. In
addition to 4 independent transceivers, a time-slot assignment
circuit is included to support interfacing to the system
backplane.
Each QDASL line operates as an ISDN ``U'' Interface for
short loop applications, typically in a PBX environment, providing
transmission for 2 B channels and 1 D channel.
Full-duplex transmission at 144 kb/s is achieved on single
twisted wire pairs using a burst-mode technique (Time Compression
Multiplexed). All timing sequences necessary for
loop activation and de-activation are generated on-chip.
Alternate Mark Inversion (AMI) line coding is used to ensure
low error rates in the presence of noise with lower emi radiation
than other codes such as Biphase (Manchester). On
Ý24 AWG cable the range is at least 1.8 km (6k ft).
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TP3404V Quad Digital Adapter for Subscriber Loops (QDASL)
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Company Info
Shenzhen Bells Electronics Co., Ltd.
[China (Mainland)]
[Verified Member]
City: Shenzhen
Province/State: Guangdong
Country/Region : China (Mainland)
Business Type:Manufacturer, Distributor/Wholesaler
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