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DATA
*) Speeds higher than 19200 are not supported by LAMs or SOPHO-SET
Table 2-2 Summary of Data Rate Adaptors.
• Without Data Rate Adaption
If the transmission speed between the two DTEs is 64 kbps, then the full data channel is
used for transferring user information; no control signals can be transferred. Since no
control signals are transferred no synchronisation can be applied. The DTEs themselves
must use some kind of frame structure to interpret the digital information.
The DCE receives the user-data from the DTE and inserts it in the 64 kbps user channel.
The user channel is multiplexed by the DCE into the 152 kbps 2B+D line to the DLC. The
DLC-line interface demultiplexes the 64 kbps user channel from the 2B+D line and inserts
it in a timeslot in the 2 Mbps highway to the PSC. The 64 kbps signal is transferred to the
opposite DLC, via the PSC/PMC and the switching network (and, if necessary, inter-unit
links). The receiving DLC extracts the 64 kbps user channel from the 2 Mbps highway and
multiplexes it into the user channel of the 2B+D line to the destination DCE. The data is
extracted from the 2B+D line by the DCE and passed to the DTE. A transparent 64 kbps
digital path has thus been established between the two DTEs.
2.3.2.
Profiles
This feature is only available in the SOPHO-SET S375 D, SOPHO-SET P375 D and the
OQ1505
2400
3600
4800
7200
9600
12000
14400
19200
38400 *)
48000 *)
56000 *)
64000 *)
OQ1509
75/1200
2400
4800
9600
19200
Ergoline
2400
4800
9600
19200
38400
19
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