System information

FCD 901 48
Issue R2A, 07.2009
XMP1 Release 5.5 System Description
Analog conference without signalling (modem mode)
Page 2-66 Proprietary Information Aastra
2.6.3.2 Analog conference without signalling (modem mode)
With XMP1 version 3.8.5 and higher, the "Analog conference" can be
configured in such a way that a control function using the a-bit is no longer
necessary.
On all CNF modules involved in the "Analog conference", the central card
slot data bit 1 "Modem mode (without signalling)" must be set to 1. Thus, all
conference channels without AIS are involved in the conference
independent of any incoming signalling data.
In order to ensure operation in the SUB-SUB mode, incoming signalling
data available at a port are looped back to the latter. This means, if the S2in
line of an FEK channel becomes active, its S2out line also becomes active.
However, this does not affect the conference.
Figure 2.29: Analog conference in modem mode (without signalling)
Usable interfaces
All analog XMP1 interfaces can be used to connect subscribers to an
analog conference.
However, in normal cases of application, the SUB and FEK interfaces are
used for this purpose.
Note: When using a SUB module, the SUB-SUB operating mode
must be configured (decentral card slot data - bit 23 = 1).
SUB SUB SUB
CNF Analog Conference
on KZU FEK (8) module
Subscr.1 Subscr.2 Subscr.3
Conference channels
12
34
SUB SUB
CNF Analog Conference
on KZU FEK (8) module
Subscr.4 Subscr.5
Conference channels
12
34
SUB SUB
CNF Analog Conference
on KZU FEK (8) module
Subscr.6 Subscr.7
Conference channels
12
34
Node 1
Node 2
Port
Port
2 Mbit/s
[1] [2]
[3]
[1] [1]
[1] [1] [1] [1]
[3]
Port
CNF A CNF B
Central card slot data - bit 1:
"Modem mode (without signalling) yes=1“