Nokia 7705 SAR - 3.2.15.3 MC-APS

Interface Configuration Guide 7705 SAR Interfaces
Edition: 01 3HE 11011 AAAC TQZZA 129
SC-APS with TDM access is supported on DS3, DS1, E1, and DS0 (64 kb/s)
channels.
The working and protection circuits of an SC-APS group must be on two ports on
different adapter cards.
Figure 11 shows an SC-APS group with physical port and adapter card failure
protection. Figure 12 shows a packet network using SC-APS.
Figure 11 SC-APS with Physical Port and Adapter Card Protection
Figure 12 SC-APS Application
3.2.15.3 MC-APS
MC-APS extends the functionality offered by SC-APS to include protection against
7705 SAR node failure. MC-APS is supported in bidirectional mode on:
• 2-port OC3/STM1 Channelized Adapter cards for TDM CES (Cpipes) and TDM
CESoETH with MEF 8 with DS3/DS1/E1/DS0 channels
• 4-port OC3/STM1 / 1-port OC12/STM4 Adapter cards for MLPPP access ports
or CES (Cpipes) and TDM CESoETH (MEF 8) access ports with DS1/E1
channels
23423
7705 SAR
SC-APS
group
CE
Link 1
Link 2
OC3/STM1 Clear
ATM 1+1 APS
BTS
PDH/SONET/
SDH/Microwave
network
TDM
TDM
NxT1/E1
20790
RNC
Node B
DACS
SONET/
SDH/
Microwave
network
7705 SAR
7705 SAR
BSC
DACS
OC3/STM1 Ch
TDM 1+1 APS
OC3/STM1 Ch
TDM 1+1 APS
OC3/STM1 Clear
POS 1+1 APS