ATM Tips
Issue 4 May 2002
5-95555-233-123
1. Enter list sys-link on the DEFINITY SAT. Screen 5-34 shows the output.
Screen 5-34. List sys-link screen
Ensure that the fields have the values indicated below.
2. Enter show switch circuittable on the A500 console. Screen 5-35 shows
the output.
Screen 5-35. A500: show switch circuit screen
■ The pp VBRnrt (Variable Bit Rate) virtual circuits between A500 ports A1.1
(PPN) and A1.2 (EPN) are used for signaling between the PPN and each
EPN.
■ These are established once upon initialization under control of DEFINITY
Call Processing. They represent the ATM Control Link (ACL) and
Expansion Archangel Link (EAL).
■ VBRnrt virtual circuits are also be used for ISDN channels between
DEFINITY Server port networks.
■ Other VBRnrt virtual circuits may exist between A500 ports that are not
associated with DEFINITY port networks. A common use of VBRnrt circuits
is multimedia and video-conferencing systems.
Link Type/
Channel
One PACL to each TN230X in either a PPN or an EPN, and
one EAL to each TN230X in an EPN.
State up
list sys-link
SYSTEM LINKS INFORMATION
Location Link Type/ State Current Faulted Last Fault
Channel Path Path Recorded
02A0101 EAL up present present 12/06/1997 16:20
01B0202 PACL up present present 12/06/1997 16:17
02A0102 PACL up present present 12/06/1997 16:20
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
_________________________________________________________
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