Figure 16: Mc-Aps With Atm Vll Redundancy - Alcatel-Lucent 7750 SR OS Interface Configuration Manual

An example of a customer application in the mobile market is displayed in
GSM/GPRS
R99
HSxPA
GSM/GPRS
R99
HSxPA
In the application show in
hub site before being backhauled to a Tier 1 site where the radio network controller (RNC) which
terminates user calls is located. This application combines MC-APS on the RNC access side and
pseudowire redundancy and pseudowire switching on the core network side. pseudowire
switching is used in order to separate the routing domains between the access network and the core
network.
7750 SR OS Interface Configuration Guide
Active/Standby
Pseudo-wire
T-PE
E1 TDM
E1 ATM
7750
E1 IMA ATM ATM
PW
Switch
SR-7
E1 IMA ATM
Or xDSL
Active/Standby
Pseudo-wire
T-PE
E1 TDM
E1 ATM
E1 IMA ATM ATM 7710
Switch
PW
E1 IMA ATM
Or xDSL

Figure 16: MC-APS with ATM VLL Redundancy

Figure 16, 2G and 3G cell sites are aggregated into a Tier 2 or Tier 3
Interface Configuration
Pseudo-wire
Segments
S-PE T-PE
Convergent
Packet Network
7750
7750
PW PW
SR-7
SR-7
IP MPL Core
Layer 3 VPNs
7750 7750
PW
PW
SR-7 SR-7
Multi-chassis
Protection
Pseudo-wire
Segments
S-PE T-PE
Convergent
Packet Network
7710 7710
PW
PW
IP MPL Core
Layer 3 VPNs
7710
7710
PW PW
Multi-chassis
Protection
Figure 16.
RNC Cluster
OSSG145
RNC Cluster
OSSG145-7710
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