Vendor |
Comarra |
Nortel |
Nortel |
Nortel |
Lucent |
Lucent |
Lucent |
Marconi |
Marconi |
Tellabs/Fibcom |
Fujitsu |
Alcatel |
Alcatel |
Siemens |
Siemens |
Huawei |
ZTE |
ZTE |
Product Name |
TN-1X/4 |
TN-1X/S |
TN-4XE |
ADM 4/1 |
AM1 |
AM1 Plus |
SMA4 |
MSH41C |
Focus AC1 |
FLX 150A STM-1/4/16 |
1650 SMC |
1640 FOX |
SMA 1/4 |
SMA1K |
Optix Series |
ZXSM-150/600/2500 |
ZXSM 150 |
|
Feature |
||||||||||||||||||
Slots |
5 tributary slots |
4 |
1,4 |
8 tributary slots |
6 plug-in slots |
2 |
2 |
4,8,8 tributary slots |
252 E1s can be fully dropped from a single-row sub-rack |
6 slots for E1, E3, STM-1 cards; 18 in all |
3 tributary slots |
2 tributary slots |
6 slots on one sub-rack |
2 |
4 on 155/622H |
up to 16 tributary slots |
4 active tributary slots |
|
Modularity |
Yes |
Yes |
Yes |
Yes |
Yes |
No |
No |
Yes |
Yes |
Yes |
Yes |
Yes; but limited number of tributary slots and integrated common card functionality |
Yes; but limited number of tributary slots and integrated common card functionality |
Yes |
No |
Optix 155/622 : Yes; Optix 155/622H : No |
Yes |
Yes |
Support for an expansion chassis |
Yes |
No |
Yes: support for a full-height and a reduced-height version |
No |
No |
No |
No |
No? |
No? |
No |
Yes |
No? |
No? |
Yes |
No |
Yes |
Yes |
Yes |
E1 |
100% drop capability (504 E1s) |
63 |
16 |
256 |
126 |
16,32 |
16,32 |
32 / 96 / 128 / 256 |
63,252 |
126 |
Yes |
189 |
32 |
Yes |
21,63 |
Yes |
882 per rack |
63 |
E3 |
100% drop capability (12 E1s) |
3 |
Reduced height version TN-1X/S does not support E3/DS3 interfaces |
24 |
Yes |
2 |
2 |
?? |
6 |
Yes |
9 |
6 |
Yes |
Yes |
252 |
Yes |
||
STM-1 |
12 STM-1s |
1 |
1 |
only S1.1 |
Yes |
2 |
2 |
6,8 |
Yes |
4 |
3 |
Yes |
4 |
32 STM-1s; 12 STM-4s |
4 |
|||
SR and LR Optics limitations |
No |
No |
No |
does not support long-reach optics on its tributaries |
No |
only short-reach aggregate interfaces are supported for STM-1 |
only short-reach aggregate interfaces are supported for STM-1 |
No |
No |
No |
No |
No |
No |
No |
No |
No |
No |
No |
Integrated amplifier support |
Yes |
No |
No |
No |
No |
No |
No |
No |
Yes |
No |
No |
No |
No |
No |
No |
No |
Yes |
No |
Very Long Spans (VLR, JE) |
Yes (spans up to 200 kms can be realized) |
No |
No |
No |
No |
No |
No |
No |
Yes |
No |
No |
No |
No |
Yes |
No |
No |
Yes |
No |
Ethernet |
Yes |
Yes |
Yes |
No |
No |
2 |
4 |
Yes |
No |
No |
Yes |
Yes |
Yes |
Yes |
No |
8 |
No |
|
n x VC-12 mapping |
Yes |
No |
No |
No |
No |
Only for n <= 5 |
Only for n <=5 |
Yes |
No |
No |
No? |
No |
No |
No |
No |
No |
No |
|
ATM Support |
Yes (Roadmap) |
No |
No |
No |
No |
No |
No |
Yes |
No |
Yes |
No |
Yes |
Yes |
No |
Yes |
No |
||
Cell Streaming |
Yes (Roadmap) |
No |
No |
No |
No |
No |
No |
Yes |
No |
No |
No |
No? |
No? |
No |
No |
No |
||
Common Module Redundancy |
PSU, XC, PSS |
PSUs, XCs |
PSUs, XCs |
PSU, XCs |
PSU, Transfer Board (XC), Timing Board |
PSU |
PSU |
PSU, XC |
PSU, XC |
PSU, XC |
PSU, XC |
PSU, XC |
PSU, XC |
PSU, XC, Processor Card |
Card redundancy is supported |
PSU, XC |
PSU, XC, Clock Board |
PSU, XC, Clock Board |
Control Card Redundancy |
Yes |
No |
No |
No |
No |
No |
No |
No |
No |
No |
No |
No |
Yes |
No |
No |
No |
No |
|
Tributary protection |
Yes |
Yes |
Yes |
Yes |
Yes |
No |
No |
No? |
No? |
Yes |
Yes |
No? |
No? |
Yes |
No |
Yes |
Yes |
Yes |
MS-SPRing support at STM-4 |
Yes |
No |
No |
No |
No |
No |
No |
No |
Yes |
No |
No |
No |
No |
Yes |
No |
No? |
Yes |
|
Cross-connect Size |
16 STM-1s (non-blocking at VC-12) |
48 STM-1s |
1 STM-1 |
1 STM-1 |
1 STM-1 |
32 STM-1s |
16 STM-1s |
Limited to 4 X STM-1s on the STM-4 Aggregate |
504 VC-12s |
32 STM-1s |
8 STM-1s |
1008 VC-12s |
Non-blocking cross-connect at VC-12 |
16, 24 STM-1s |
16 STM-1, 96 STM-1 |
8 STM-1 |
||
VC-12 Cross-connect limitations |
None |
cross-connect is blocking because of the 1 STM-1 limitation from both the aggregates to the tribs |
trib-trib cross-connections are only between STM-1 tributaries |
No |
Does not support non-blocking VC-12 cross-connectivity in STM-4 configurations |
VC-4 nonblocking, with full VC-3,VC-12 connectivity within one VC-4 out of four VC-4s |
VC-4 nonblocking, with full VC-3,VC-12 connectivity within one VC-4 out of four VC-4s |
None |
Does not support hair-pinning at VC-4/VC-12 granularities |
None? |
None |
None |
None |
No hair-pinning support |
None |
None? |
None? |
|
Cross-connect bypass for the Regenerator configuration |
Yes; flexibility to use a space switch in TM configurations too |
Yes |
Yes |
No?; cross-connect seems to be integrated in the aggregate card |
Yes |
No |
No |
No; cross-connect is integrated in the aggregate card |
No; cross-connect is integrated in the aggregate card |
No; cross-connect is integrated in the aggregate card |
No; cross-connect is integrated in the aggregate card |
Yes |
Yes |
Yes |
Yes |
Yes |
||
H X W X D |
6 U height |
12U |
12U |
11 U |
433 X 448 X 280mm, 433 X 224 X 280mm |
534 X 450 X 280 mm |
1U box |
500 X 450 X 280 mm |
350 X 300 X 241 mm |
285 X 313 X 90 mm |
449 X 108 X 279 |
2.2 M rack height (19'' width) |
44 X 6.7 X 13.2 cm |
|||||
Compactness |
Yes |
No - 12 U box |
No - 12 U box |
No - 11 U box |
No - 10U box |
Yes |
Yes |
No -12 U box |
No |
Yes |
No - 11 U box |
8 U box |
7 U box |
No |
Yes |
6 U box |
No |
No |
Drop Capability |
100% add-drop capability at STM-4 using two expansion chassis |
1 STM-1 |
1 STM-1 |
8 STM-1s |
2 STM-1s |
32 E1s |
32 E1s |
100% |
100% |
100% |
12 STM-1s |
100% |
100% |
100% |
100% |
100% |
100% |
100% |
Drop Limitations |
No |
In STM-4 configuration, only one of the 4 AUGs can be dropped. The remaining are passed through. In a hub configuration, if other AUGs also need to be accessed, additional TN-1X/4s need to be provisioned. |
In STM-4 configuration, only one of the 4 AUGs can be groomed and dropped. The remaining are passed through. In a hub configuration, if other AUGs also need to be groomed, additional TN-1X/4s need to be provisioned. |
No |
Limited drop capabilities for an STM-4 box |
useful for nodes with low drop requirements only; cannot drop 63 E1s from one STM-1 aggregate |
useful for nodes with low drop requirements only; cannot drop 63 E1s from one STM-1 aggregate |
No |
No |
only 2 STM-1s worth of E1/E3 tributary traffic can be cross-connected |
No |
No |
No |
No |
No |
No |
No |
No |
Upgradeability |
Smooth upgrade from STM-1 to STM-4 |
Upgradeable with limited drop capabilities in the STM-4 configurations |
Upgradeable with limited drop capabilities in the STM-4 configurations |
Primarily a STM-4 box; cannot be upgraded to STM-16 and does not support STM-1 Aggregate Interfaces |
STM-4 version cannot be configured as a TM |
Not upgradeable to STM-4 |
Upgradeable with limited drop capabilities in the STM-4 configurations |
The upgrade process is severely traffic affecting |
Primarily an STM-4 product |
The upgrade process is severely traffic affecting |
The upgrade process is severely traffic affecting |
The upgrade process is severely traffic affecting |
Yes |
Not upgradeable |
Yes |
Yes |
Not upgradeable |
|
|
Software - support for point-and-click provisioning |
Yes |
Yes |
Yes? |
Yes? |
No |
No |
No |
No |
No |
No |
No |
No |
No |
No |
No |
No |
No |
No |
E-mail:
info@comarra.co.uk
Web Site: http://www.comarra.co.uk