No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

CLI-based Configuration Guide - Interface Management

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the basic concepts, configuration procedures, and configuration examples of the interfaces supported by the device.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Calculation of E1/T1 Path Sequence Number

Calculation of E1/T1 Path Sequence Number

CPOS interfaces adopt the multiplexing mode of byte interleave, so the lower-order VCs in a higher-order VC are not arranged in sequence. To facilitate user configuration, the following takes E1 in CPOS adopting AU-4 multiplexing path as an example to introduce the method of calculating the TU number.

The multiplexing process in Figure 15-6 shows that the 2 Mbit/s multiplexing structure is 3-7-3 when the AU-4 multiplexing path is adopted. The following formula shows how to calculate the numbers of TU-12s that are located in different positions in a VC-4:

TU-12 number = TUG-3 number + (TUG-2 number - 1) x 3 + (TU-12 number - 1) x 21

In a VC-4, all TUG-3s are numbered the same; all TUG-2s are numbered the same; the difference between two TU-12 numbers is 1. These two TU-12s are adjacent.

NOTE:
  • The numbers listed in the preceding formula stand for the positions in a VC-4 frame.

  • The TUG-3 number ranges from 1 to 3; the TUG-2 number ranges from 1 to 7; the TU-12 number ranges from 1 to 3.

  • The TU-12 number indicates which one of the 63 TU-12s is in the VC-4 frame according to the sequence and also indicates the E1 channel number.

Figure 15-6  Sequence of arrangement of TUG-3, TUG-2 and TU-12 in VC-4

When the AU-3 multiplexing path is adopted, the calculation of the TU-12 number can be deduced in a similar manner.

When 63 E1 channels or 84 T1 channels are configured on a CPOS interface, these channels can be directly numbered from 1 to 63 or 1 to 84. If a router of Huawei is connected to a channelized STM-1 interface of a router from another vendor, note differences in channel numbers.

Translation
Download
Updated: 2019-03-06

Document ID: EDOC1100069331

Views: 21148

Downloads: 95

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next