cx29503 Mindspeed Technologies, cx29503 Datasheet - Page 93

• Manufacturer Part Number: cx29503
• Description: Cx29503 Broadband Access Multiplexer Data Sheet
• Manufacturer: Mindspeed Technologies

CX29503 Data Sheet
2.10.5.5
2.10.5.6
2.10.5.7
29503-DSH-002-B
SDH Overhead Communication Channels
If 4 CX29503 devices are connected to the SI-Bus and they are processing SDH signals,
at least one of the four devices will pass the following overhead data communication
channels across the overhead TSB: DCCR, DCCM, F2, F3, K3, and N1.
In addition, each CX29503 that transfers the content of tributary (VC-11 and VC-12)
signals directly to and from the TSB module can optionally transfer 28 channels of K4
bits across the overhead TSB. In this case, no PDH overhead communication channels
(DS3 TDL, E3 TDL, DS1 FDL, E1 Sa) are carried on the overhead TSB.
If the SDH payload does not contain tributaries, but rather DS3 signals, then the DS3
TDL communications channel are carried on the overhead TSB. If that DS3 signal
contains DS1 or E1 signals, then 28 DS1 FDL channels or 21 E1 Sa channels are also
be carried on the overhead TSB.
If the SDH payload includes E3 signals, then the E3 overhead communications
channel are carried on the overhead TSB. If that E3 signal contains E1 signals, then 16
E1 Sa channels are also be carried on the overhead TSB.
Electrical DS3 Serial Port Overhead Communication Channels
When the CX29503 is connected to an electrical DS3/E3 serial port, the DS3 TDL
communications channel is carried on the overhead TSB. If that DS3 signal contains
DS1 or E1 signals, then 28 DS1 FDL channels or 21 E1 Sa channels are also carried on
the overhead TSB. In this mode, there are no SONET/SDH overhead communication
channels carried on the overhead TSB.
Electrical E3 Serial Port Overhead Communication Channels
When the CX29503 is connected to an electrical DS3/E3 serial port, the E3 overhead
communications channel is carried on the overhead TSB. In addition, the 16 E1 Sa
channels are also carried on the overhead TSB. In this mode, there are no SONET/
SDH overhead communication channels carried on the overhead TSB.
Mindspeed Technologies™
Preliminary Information
Functional Description
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