Beta Draft Confidential
Configuring Trunks
About APS
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000 1/19/057-9
Table 7-2 describes the slow APS support in this release.
Table 7-2. Slow APS Support
Switch/
Modules
Logical 
Port
Circuit 
Type
Base 
Standard
Direction Reversion Inter or 
Intra 
card
CBX 3500
4-Port OC-3c/ 
STM-1 IOM
UNI
a
, 
Direct 
trunk
b
PVC GR-253, 
G.841 
Sec. 7,
G.783/
G.841 
Annex B
Bi-directional Non-revertive Inter-card
16-Port OC-3c/
STM-1 ULC
4-Port OC-12c/
STM-4 ULC
1-Port OC-48c/
STM-16 ULC
UNI
a
, 
Direct 
trunk
b
PVC GR-253, 
G.841 
Sec. 7,
G.783/
G.841 
Annex B
Bi-directional Non-revertive Inter-card
CBX 500
4-Port OC-3c/ 
STM-1 IOM
UNI
a
, 
Direct 
trunk
b
PVC GR-253, 
G.841 
Sec. 7,
G.783/
G.841 
Annex B
Bi-directional Non-revertive Inter-card
1-Port OC-12c/
STM-4 IOM
UNI
a
, 
Direct 
trunk
b
PVC GR-253, 
G.841 
Sec. 7,
G.783/
G.841 
Annex B
Bi-directional Non-revertive Inter-card
GX 550
4-Port OC-3/
STM-1 Phy
UNI
a
, 
Direct 
trunk
b
PVC GR-253, 
G.783/
G.841 
Annex B
Bi-directional Non-revertive Inter-card 
1-Port OC-12/
STM-4 Phy
UNI
a
, 
Direct 
trunk
b
PVC GR-253, 
G.783/
G.841 
Annex B
Bi-directional Non-revertive Inter-card