| E1/T1 traffic aggregation |
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| STM-1/OC-3c traffic aggregation |
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| Channelized STM-1/OC-3 traffic aggregation |
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| E1/T1 ports |
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32 or 63 using patch panels |
8 or 16, built-in |
0 or 4, built-in |
| Fast Ethernet ports |
1 for OOB* management only |
1 for OOB* management only |
1 for OOB* management only |
2 for PSN traffic and/or inband management |
2 for PSN traffic and/or inband management |
| Power supply |
Single/dual, hot-swappable |
Single/dual, hot-swappable |
Single/dual, hot-swappable |
Single/dual, fixed |
Single, fixed |