Loop Telecom Loop-V 4200 - As a One-To-Two E1 to T1 Converter; Figure 1- 5 as a One-To-Two E1;T1 Converter

Chapter 1 Product Description
1-4
1.3.3 As a One-to-Two E1 to T1 Converter
Figure 1- 5 As a One-to-Two E1/T1 Converter
In this application, three slots are used in combination to provide one-to-two E1 to T1 conversion function.
Because of the combined bit rate of two T1 lines is higher than one E1, all 31 time slots of the E1 line can be
assigned. User can assign each of 31 E1 time slots to any of the 48 time-slots available in 2 T1s, with time
slots left over in the T1s. For digitized voice, A-law to µ-law conversion will be performed. For CAS (channel
associated signaling), only 30 time slots can be assigned with the signaling bits placed in their proper places
in the respective E1 and T1 formats. Performance monitoring and maintenance functions, such as local and
remote loop backs, are available. By using all eight available slots, 2 independent one-to-two E1 to T1
converters can be realized along with a one-to-one converter (see Clock Source note above).
In a related application, similar to Figure 1-4, time slots left over in one or both T1s can be filled with data
from a DTE plug-in card.
2 T1 Lines
T1
Network
Management
Loop-V 4200
E1
E1 Line
T1