Aux Channels Architecture; Figure 87. Aux Handling Intra-Shelf Architecture - Alcatel 1850 TSS-320 Technical Handbook

3.8.2 AUX channels architecture

Not available in current release
The internal architecture handling the Auxiliary channels (AUX) supported by the OH bytes associated
to the different service signals supported is depicted in Figure 87. on page 141.
AUX link - max. 19.44 Mb/s
ECC link
To/from
Equipment
Controllers A/B
The purpose of this architecture is to support the termination and the cross-connection of the different
types of AUX's associated to the services supported by the equipment: specifically, Auxiliary channels
may be cross-connected, on byte basis, independently from the payload connectivity, by the Service
board.
– The AUX's are dropped/inserted by the port associated to the specific service:
• in SDH WDM ports a specific 'TDM framer' block is implemented, in order to realize the
adaptation of terminated OH bytes to the internal AUX frame format.
– The physical communication between each SDH (WDM) port and 'Service' board is based on 1 TDM
full duplex link. The AUX switching functionality is located on 'Service' board
– The AUX switching functionality is located on 'Service' board
– The configured connectivity interesting the SDH, WDM AUX channels, may be either a cross-
connection between Ports or a termination towards one of the 'physical accesses' provided by
Service card
Technical Handbook Common
Functional Description
(32)
(2)

Figure 87. AUX handling Intra-shelf Architecture

Service
OH byte AUX
switch IFS
Alcatel 1850 TSS-320 Rel. 1.1
8DG 07734 AAAA Edition 01
2x G.703 (64 Kb/s)
2x G.703 (2 Mb/s)
2xV24 (64 Kb/s)
2xV11 (64 Kb/s)
EOW (DTMF)
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