Avaya S8700 Maintenance Manual page 1962

Maintenance-Object Repair Procedures
Distributed PKT-INTs
In earlier G3r systems, every PKT-INT resided in the PPN and terminated all of
the LAP-D links. In S8700 Multi-Connect, LAP-D links are terminated by the
PKT-INTs within IPSIs that are distributed out to the PNs. Whereas, G3r allowed
up to three active and three standby PKT-INTs in the PPN, S8700 Multi-Connect
allows one active and one standby PKT-INT in each PN (that is, up to 64 (for ATM
PNC) or 44 (for CSS PNC) active PKT-INTs in the system). As shown in
8-73, EPNs 1 and 2 have IPSIs that terminate LAP-D links. EPNs 3 and 4 do not
have local IPSIs, so their LAP-D links are terminated by IPSIs in EPNs 1 and 2,
respectively.
IPSI IPSI
PKT pkt
EPN 1
BRI/PRI
EI EI
Figure 8-73. Distributed PKT-INTs
8-1240 Issue 1 May 2002
Server A
PCD
Control Network A
IPSI IPSI
PKT pkt
EPN 2
BRI/PRI
EI EI
Bearer Network A
Legend:
Server B
Control Network B
EPN 3 EPN 4
BRI/PRI
EI EI EI
Bearer Network B
Figure
PCD connection
Local LAP-D
Inter-PN LAP-D
Inter-PN LAP-D
Active PKT-INT
PKT
Standby PKT-INT
pkt
BRI/PRI
EI
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