Maintenance for CSI systems
555-233-119
150
Issue 5 October 2002
Screen 45.
A500:show switch circuit screen
— The pmp CBR (Constant Bit Rate) virtual circuits (VCs) between
A500 port A1.1 (PPN) and A500 port A1.2 (EPN) are used for talk
paths between port networks (PPN to EPN, EPN to PPN, or EPN to
EPN).
— They are established when calls are first setup between port
networks. Each virtual circuit represents one party of a complete
multiparty talk path.
— The report above shows one complete talk path: one unidirectional
point-to-multipoint virtual circuit from A1.1 to A1.2, and another from
A1.2 to A1.1.
— These virtual circuits may persist beyond the duration of a phone
call. The Avaya MultiVantage Software saves virtual circuits for a
few seconds after the end stations have hung up in case the VC can
be used again for another call between the same two port networks.
— In early version of the Release 2 A500 firmware, these connections
incorrectly identified as
pmp UBR
.
— There may be other CBR virtual circuits between A500 ports that are
not associated with Avaya Definity Server CSI port networks. A
common CBR application is Circuit Emulation, in which T-1, T-3, etc.
circuits are carried over ATM.
A500:show switch circuit
_______________________________________________________
| Input | Output | Connection |
| port vpi vci| port vpi vci| type class parameters |
|______________|______________|_________________________|
A1.1 0 5 Self 0 1 pp UBR ppd on
A1.1 0 32 A1.2 0 32 pp VBRnrt pcr=5729 /scr=5729 /mbs=17187
A1.1 0 35 A1.2 0 35 pmp CBR pcr=173
A1.2 0 5 Self 0 2 pp UBR ppd on
A1.2 0 32 A1.1 0 32 pp VBRnrt pcr=5729 /scr=5729 /mbs=17187
A1.2 0 34 A1.1 0 34 pmp CBR pcr=173
Self 0 1 A1.1 0 5 pp UBR ppd on
Self 0 2 A1.2 0 5 pp UBR ppd on
_________________________________________________________