HFC-S2M Cologne Chip AG, HFC-S2M Datasheet - Page 201

• Manufacturer Part Number: HFC-S2M
• Description: Isdn HDLC Fifo Controller With Primary Rate Interface
• Manufacturer: Cologne Chip AG

Conference members can also be time slots of the E1 interface. In this case, a pair of trans-
mit / receive PCM time slots have to be configured to loop back the data.
In detail, the conference signal on E1-channel[
and the signal is looped-back from slot[ ,RX] to HFC-channel[
on HFC-channel[
to be enabled, although the FIFOs are not used to store data (see Section 3.4).
8.4 Conference setup example for CSM
The following example shows the register settings for a conference with three members.
Two members are located on the PCM interface side while the other one is located on the E1
interface side. The example uses conference number 2. It is specified in Table 8.2.
March 2003 (rev. A)
HFC-E1
#11
#11
FIFOs
RX
TX
Conference member
E1 member
1
2
×Ø
Ò
Ò
PCM member
PCM member
,RX] and HFC-channel[
1
2
Table 8.2: Conference example specification
loop
loop
#6
#6
Multiparty audio conferences
Figure 8.1: Conference example
: S/T interf. #1, RX B1
: S/T interf. #1, TX B1
: PCM slot[5,RX]
: PCM slot[5,TX]
: PCM slot[20,RX]
: PCM slot[20,TX]
RX
TX
Data Sheet
3
Ñ
,TX] require one transmit and one receive FIFO
Ò
,RX] gets assigned to PCM time slot[ ,TX]
Connection
#4
#4
RX
+
TX
Conference #2
Conference #2
PCM slot[6,TX]
PCM slot[6,RX]
HFC-channel[6,TX]
HFC-channel[6,TX]
HFC-channel[6,RX]
HFC-channel[6,RX]
-
-
-
Ñ
,TX]. The data transmission
PCM slot
E1 slot
#20
#20
#4 TX
#4
#6 TX
#6
#5
#5
RX
RX
RX
RX
TX
TX
loop
Cologne
Chip
E1 member
E1 member
1st PCM member
1st PCM member
2nd PCM member
2nd PCM member
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