Specifications

Dialogic
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DSI SPCI Network Interface Boards Programmer's Manual Issue 7
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ts_mask
A 32 bit timeslot mask where each bit position is set to 1 if the corresponding timeslot
on the T1/E1 interface is required to be connected to the CT bus. The least significant
bit (bit 0) represents timeslot 0. Each timeslot for which the corresponding bit is set in
ts_mask is connected up to the CT bus, other timeslots are not affected in any way.
Timeslots containing SS7 signaling processed by the signaling processor on the DSI
SPCI Board should not be included in the timeslot mask. Usually, the mask should be
set to include all bearer (voice) timeslots but no signaling timeslots. Bit 0
(corresponding to timeslot 0 on the LIU) must not be set as timeslot 0 for an E1
interface contains synchronization information whilst timeslot 0 for a T1 interface does
not exist.
As an example, for an E1 interface with SS7 signaling on timeslot 16, and the
remaining 30 timeslots used for voice circuits, ts_mask should be set to value
0xfffefffe. For a T1 interface with signaling on timeslot 24, ts_mask must be set to
value 0x00fffffe.
mode
This parameter controls how the CT bus channels are allocated. Usually, (mode=1)
the first timeslot connected to the CT bus is connected to sc_channel and each
subsequent timeslot that is selected is connected to the next CT bus channel. This
allows maximum utilization of channels on the CT bus.
An alternative mode (mode=2) (only used if there is a specific requirement for it)
associates (but does not necessarily connect) timeslot 0 on the LIU with sc_channel
and subsequent timeslots on the LIU with subsequent CT bus channels. Connections
are only made when the corresponding bit in the timeslot mask is set to 1. This mode
of operation preserves the spacing between timeslots that was originally found on the
T1/E1 interface but does result in a number of CT bus channels being not used.
Status Response
The confirmation message (if requested) indicates success by status of zero.
On error, the following status value can be found in the confirmation message.
Value
Mnemonic
Description
0xff
None
Setup failed