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參數(shù)資料
| 型號(hào)： | MT90500 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Multi-Channel ATM AAL1 SAR(多通道 ATM AAL1分段及重組設(shè)備（基于通訊總線的系統(tǒng)與ATM網(wǎng)絡(luò)的接口）) |
| 中文描述： | 多通道自動(dòng)柜員機(jī)AAL1特區(qū)（多通道自動(dòng)柜員機(jī)AAL1分段及重組設(shè)備（基于通訊總線的系統(tǒng)與空中交通管理網(wǎng)絡(luò)的接口）） |
| 文件頁(yè)數(shù)： | 155/159頁(yè) |
| 文件大?。?/td> | 514K |
| 代理商： | MT90500 |
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MT90500
155
The input channel is now automatically written to the shared buffer, and the output channel is automatically
read from the shared buffer, resulting in the input channel being written to the output channel. The throughput
delay in this setup is 1 msec. This is due to the 4-frame TDM Input Frame Buffer followed by the 4-frame TDM
Output Frame Buffer.
7.6.3
DS0 Trunking, or Dynamic TDM channel re-mapping
The MT90500 can be used in trunking applications. In trunking applications it is often desirable to maintain an
ATM VC of constant bandwidth (constant Nx64) but to re-map the TDM channels within the ATM VC to different
TDM channels on the backplane or TDM trunks.
Given an established VC, and the need to shut down a TDM channel and re-use the bandwidth within the VC,
re-mapping a TDM channel can be done on the MT90500 as follows:
1) Tristate the output TDM channel at the reassembly device (receive TDM end), using the OE
Registers, to end the old TDM channel connection.
2) Re-write the TDM-channel-to-TX-Circular-Buffer mapping in the Transmit Circular Buffer Control
Structure at the segmentation device (transmit end). This is done by writing a new time slot and/or
stream into the word-entry associated with the particular TX circular buffer.
3) Re-write the RX-Circular-Buffer-to-TDM-channel mapping in the External Memory to Internal
Memory Control Structure at the reassembly device (receive TDM end). This is done by writing a new
TDM Channel # into the first word of the two-word-entry associated with the particular RX circular
buffer.
4) Turn on the output TDM channel at the reassembly device (receive TDM end), using the OE
Registers, to start the new connection.
Figure 72 - TDM-to-TDM Loopback/Switching
Circular
Buffer
(
64 bytes)
Input TDM Channels
Output TDM Channels
Circular
Buffer
(64 bytes)
Circular
Buffer
(64 bytes)
Circular Buffers
(Receive AND Transmit programmed into same addresses)
TDM
Input Frame
Buffer
TDM
Output Frame
Buffer
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT90500 | Multi-Channel ATM AAL1 SAR |
| MT90500AL | Multi-Channel ATM AAL1 SAR |
| MT90502 | Multi-Channel AAL2 SAR(多通道 ATM AAL2分段及重組設(shè)備（基于通訊總線的系統(tǒng)與ATM網(wǎng)絡(luò)的接口）) |
| MT90732AP | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| MT90732 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT90500AL | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Multi-Channel ATM AAL1 SAR |
| MT90500AL-ENG1 | 制造商:Mitel Networks Corporation 功能描述: |
| MT90502 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Multi-Channel AAL2 SAR |
| MT90502_06 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Multi-Channel AAL2 SAR |
| MT90502AG | 制造商:Rochester Electronics LLC 功能描述: 制造商:Zarlink Semiconductor Inc 功能描述: |
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