Step-by-step configuration Crocus CNV
66 User manual
crocusIfConvNx64<Tt/Cv>/g703OnBoard/crc4Insertion default: enabled
This attribute is only present on the Crocus Nx64 CNV.
Use the crc4Insertion attribute to enable or disable the cyclic redundancy check (CRC). If you enable this
attribute, a CRC is inserted in time slot 0 of the G.704 framed data stream. This CRC is used to check the
data integrity on the G.703 connection.
crocusIfConvNx64<Tt/Cv>/g703OnBoard/timeSlots default: 00000000000000000000000000000001
This attribute is only present on the Crocus Nx64 CNV.
Use the timeSlots attribute to …
• set the G703 interface to unframed or framed mode.
• allocate time slots in case the G703 interface is in framed mode.
Unframed and framed mode
The following table explains the difference between unframed and framed mode.
Mode Description
unframed
(transparent)
In unframed mode, a 2 Mbps data stream is sent transparently over the line.
framed
(G.704 framing)
In framed mode, up to 31 time slots each containing a 64 kbps data stream can be
sent over the line. Each 64 kbps time slot can be enabled or disabled. Time slot 0 is
reserved for synchronisation and signalling.
Selecting unframed mode
Select unframed mode by setting time slot TS0 to 1 (enabled). The value of the time slots TS1 up to TS31
is irrelevant.
Selecting framed mode and allocating time slots
Select framed mode and allocate time slots as follows:
1. Set time slot TS0 to 0 (disabled) to enable G.704 framing.
2. Allocate the desired time slots by setting them to value 1 (enabled).
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