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SRM-6 Operation & Diagnostics
Aggregate Interface Configuration Screen
At the SRM-6 Configuration Menu, press 1 and then press Enter to access the SRM-6 Interface
Configuration menu.
Table 3-2
Aggregate Interface Configuration Selections
Selection
[1] Aggregate Rate
[2] TX Clock Source
[CR] Return to Previous Menu
[S] Save
[0] Return to Main Menu
Special Considerations
•
Aggregate mode of operation is synchronous at all times.
•
Aggregate DTR is always forced ON; Aggregate RTS is always forced ON.
•
If the SRM-6 is communicating with a DSU, select aggregate rates of 19.2, 56.0 or 64.0Kpbs.
If the SRM-6 is communicating with a modem, select aggregate rates of 19.2, 28.8 or 33.6Kbps.
•
While saving an aggregate rate change, the SRM-6 can be busy for up to 10 seconds, during
which the SCM may declare a "slot not responding" condition. Press Enter to respond to the
SCM and return to the Shelf Inventory screen. The new rate will have been saved correctly.
•
With a new aggregate rate, all previously enabled channels with no DTE RTS will be disabled.
They must be enabled again at the Channel Interface Configuration Screen.
076R176-000
Issue 1
Table 3-2
describes the screen selections with defaults shown in Bold.
SRM-6 Interface Configuration
[1] Aggregate Rate:28.8
[2] TX Clock Source:Channel 1 TT
[CR] Return to Previous Menu
[0]
Return to Main Menu
Select: [ ]
Selects data rate:
19.2 Kbps (Total of all channels cannot exceed 16.8 Kbps.)
28.8 Kbps
(Total of all channels cannot exceed 26.4 Kbps.)
33.6 Kbps (Total of all channels cannot exceed 31.2 Kbps.)
56.0 Kbps (Total of all channels cannot exceed 52.8 Kbps.)
64.0 Kbps (Total of all channels cannot exceed 60 Kbps.)
Selects the TX clock source as DTE Terminal Timing (TT) or
DCE Send Timing (ST):
Channel 1 TT, Channel 2 TT, Channel 3 TT, Channel 4 TT, Channel 5 TT,
Channel 6 TT or
Returns to the SRM-6 Configuration Menu without saving channel
configuration changes to the unit.
Saves aggregate interface configuration changes to the unit.
Exits the Configuration Menu and returns to the SRM-6 Main Menu.
SC SRM-6 Multiplexer
Installation & Operation Manual
SRM-6 Configuration Menu
[S] Save
Description
Aggregate ST
.
3-3
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