Beta Draft Confidential
7-81/19/05 ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000
Configuring Trunks
About APS
GX 550
4-Port OC-3/STM-1
Phy
1-Port OC-12/
STM-4 Phy
c
UNI,
Direct
Trunk,
NNI
PVC,
SVC,
Offnet
PVC
b
GR-253,
G.841 Sec
7.1
Bi-directional
and
Uni-directional
d
Revertive and
Non-revertive
Inter-card
G.783/
G.841
Annex B
Bi-directional Non-revertive Inter-card
1-Port OC-48/
STM-16 Phy
UNI,
Direct
Trunk,
NNI
PVC,
SVC,
Offnet
PVC
b
GR-253,
G.841 Sec
7.1
Bi-directional
and
Uni-directional
Revertive and
Non-revertive
Inter-card
G.783/
G.841
Annex B
Bi-directional Non-revertive Inter-card
1-Port OC-48c/
STM-16c Phy
e
UNI,
Direct
Trunk,
NNI
PVC,
SVC,
Offnet
PVC
b
GR-253,
G.841 Sec
7.1
Bi-directional Revertive and
Non-revertive
Intra-card
f
G.783/
G.841
Annex B
Bi-directional Non-revertive
Intra-card
f
a
The 128 MB IOM1 is supported only.
b
Transit SPVCs are also supported. However, SPVCs originating on the interface being switched are
not supported.
c
The maximum number of VCs supported on each physical interface is the maximum number of
VCs per thread divided by four. With CID Server enabled, this restriction does not apply.
d
Uni-directional APS is supported only for PNNI interfaces on BIO1 only.
e
BIO-C module only.
f
Intra-BIO only; that is, the Phy card is protected and the facility is protected, but a BIO failure will
not be protected.
Table 7-1. Fast APS Support (Continued)
Switch/Modules Logical
Port
Circuit
Type
Base
Standard
Direction Reversion Inter- or
Intra-
card
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