3 • Configuring the Matrix Switch for operation | Model 6511RC User Manual |
| |
3.Scroll down to the SDH mapping parameter and select the appropriate mapping path from the drop-down menu. Select au3Mapper(0) or au4Mapper(1). To multiplex seven TUG-2s into an AU-3, select au3Mapper(0) (the factory default) from the drop-down menu. To multiplex three TUG-3s into an AU-4, select au4Mapper(1).
4.Click the Submit button to save changes.
You are now ready to define DS0 mappings.
Defining DS0 mappings
In order for the STM-1 link to carry traffic through the Matrix Switch to and from the ForeFront system, you must define a set of DS0 mappings (correlations). You will define mappings between the full-duplex DS0s within the STM-1 link and the simplex DS0s within the H.110 bus. While it is not necessary to define a map- ping for every DS0 in the SDH link, only the mapped DS0s will carry user data. Unmapped DS0s may be con- figured to carry an idle code. Otherwise, unmapped DS0s will carry a random bit stream.
For each DS0 Mapping you define, you will create a correlation between a communications channel in the STM-1 link and a communications channel within the ForeFront chassis mid-plane. Each STM-1 channel consists of a set of full-duplex DS0s. Each midplane channel consists of two simplex sub-channels, transmitted and received. Each sub-channel consists of a set of simplex DS0s. You will define each STM-1 channel and each mid-plane sub-channel by specifying one or more timeslot numbers up to a maximum of 32 timeslots per channel. For a STM-1channel you will select up to 32 timeslot numbers from the range numbered 1 to 32. For a mid-plane channel you will select up to 32 timeslots from the range numbered 1 to 128.
On the STM-1 side, there are 63 E1 signal streams, each comprising 32 DS0s. Within an E1, each DS0 is a full-duplex channel, comprising a transmitted and a received signal stream. The STM-1 link comprises 2016 full-duplex DS0s.
On the mid-plane side, there are 4096 simplex DS0s within the H.110 bus, organized into 32 ports. Each H.110 port comprises 128 DS0s. Within the H.110 bus, each DS0 is a simplex signal stream, which the H.110 bus can either transmit or receive. You will define the direction of a mid-plane DS0 during the mapping process as either transmitting to the H.110 bus or receiving from the H.110 bus. The H.110 bus provides 4096 simplex DS0s.
When entering E1 and H.110 timeslot numbers, you must define the same number of timeslots on the SDH and mid-plane sides of the mapping. The timeslots are defined by entering a text string that represents the timeslot numbers.
The following notation should be used for assigning timeslots:
•dash: (-), e.g., 1-4
•comma: (,), e.g., 1,4,9
•combo: 1-2,3,6-7
