BayStream 7.3 Documentation Change Notice
115385-D Rev 01
BayStream Multiservice Software Version 7.3
17
Figure 6.
Bay Networks Resilient NNI Configuration with HSSI to DS3 Interfaces
Initialization and Startup Phase
The initialization and startup procedures use Q.933 Annex A PVC Status Enquiry
and Status Response messages. Resilient NNI protocol uses these messages to
indicate PVC status.
Table 4
contains a description of each type of status enquiry
and response message.
FDDI Ring
FDDI Ring
BYS0093A
Bay Networks
Frame Relay
HSSI
HSSI
DS3
DS3 X-Connect
Other Frame Relay
switch with
unchannelized
DS3 card
BNX with HSSI card
(New standard BNX Node)
MCI Timing Source
MCI Timing Source
DS3
DS3
DS3
Digital Link 3100 DSU
(provides DS3 to
HSSI conversion)
POP (NNI)
POP B
POP C
Trunk
Trunk
Frame Relay
Network
Other
Frame Relay
switch
Other
Frame Relay
switch
Frame Relay
Network
