IT attempts to make phones reliable, including for calling 911 in the case of an emergency. To learn more about E911 and dialing in an emergency visit our E911 and Emergency Calls page.
LBL enterprise phone system (PBX)
This is an LBL-managed telephone system hosted at LBL. The new system being deployed 2021 – 2023 has a design with these resiliency features:
- Dual redundant PBX core locations in different buildings
- Each core location has battery and generator backup
- Redundant call paths to the public telephone network for outgoing calls
PBX Traditional wired phones
- Fed from telephone gateways distributed in a handful of different buildings at LBL. Most of these locations have battery and generator backup, but some buildings only have battery backup designed to last at least 2 hours.
PBX Wired Voice over IP (VoIP) desk phones
- Relies on the campus network to communicate with the PBX core.
- Campus network core and zone infrastructure has dual redundant routers each in locations with battery and generator backup.
- Power and cooling resiliency for campus network equipment in buildings varies widely depending on the infrastructure available in each building.
- The campus network is a heavily used general service and may sometimes be disrupted in areas due to cyber attacks or misbehaving systems on the network.
Building Power Resiliency Categories
Please refer to the Building Numbers table to find the power resiliency category of that building. Category descriptions are below the table.
| BUILDING NUMBERS | ||||
| 1 – Cat 4 | 46 – Cat 4 | 56A – Cat 3 | 71F – Cat 4 | 77 – Cat 4 |
| 2 – Cat 4 | 46A – Cat 4 | 58 – Cat 4 | 71J – Cat 4 | 77A – Cat 4 |
| 6 (1st flr) – Cat 4 | 46B – Cat 4 | 58A – Cat 4 | 71K – Cat 4 | 77H – Cat 4 |
| 6 (2nd flr) – Cat 2 | 47 – Cat 4 | 59 – Cat 1 | 71P – Cat 4 | 77K – Cat 4 |
| 15 – Cat 1 | 48 – Cat 1 | 60 – Cat 4 | 71T – Cat 4 | 78 – Cat 4 |
| 17 – Cat 4 | 50 – Cat 3 | 62 – Cat 1 | 71W – Cat 4 | 80 – Cat 1 |
| 23 – Cat 4 | 50A (basement) – Cat 3 | 62B – Cat 4 | 71X – Cat 4 | 80A – Cat 4 |
| 26 – Cat 1 | 50A (1st flr) – Cat 3 | 63 – Cat 4 | 72 – Cat 4 | 83 – Cat 1 |
| 27 – Cat 4 | 50A (2nd flr) – Cat 3 | 64 – Cat 4 | 72A – Cat 4 | 84 – Cat 1 |
| 28 – Cat 4 | 50A (3rd flr) – Cat 1 | 64C – Cat 4 | 72B – Cat 4 | 85 – Cat 1 |
| 30 – Cat 1 | 50A (4th flr) – Cat 1 | 65 – Cat 2 | 72C – Cat 3 | 85B – Cat 3 |
| 31 – Cat 1 | 50A (5th flr) – Cat 1 | 66 – Cat 1 | 73 – Cat 4 | 86 – Cat 4 |
| 31A – Cat 4 | 50A (6th flr) – Cat 1 | 67 – Cat 1 | 73A – Cat 4 | 88 – (1st flr) Cat 1 |
| 33 – Cat 1 | 50B – Cat 3 | 69 (1st flr) – Cat 2 | 74 – Cat 1 | 88 – (2nd flr) Cat 3 |
| 33A – Cat 4 | 50C – Cat 3 | 69 (2nd flr) – Cat 3 | 74A – Cat 3 | 90 – Cat 1 |
| 33B – Cat 4 | 50E – Cat 2 | 70 – Cat 3 | 74B – Cat 4 | 90C – Cat 4 |
| 33C – Cat 4 | 50F – Cat 3 | 70A – Cat 3 | 75 – Cat 1 | 90X – Cat 4 |
| 34 – Cat 4 | 53 – Cat 3 | 71 – Cat 4 | 75A – Cat 4 | 91 – Cat 1 |
| 35 – Cat 4 | 53B – Cat 4 | 71A – Cat 4 | 75B – Cat 3 | 971 – Cat 1 |
| 36 – Cat 4 | 55 – Cat 3 | 71B – Cat 4 | 75C – Cat 4 | 977 – Cat 1 |
| 37 – Cat 4 | 55A – Cat 4 | 71C – Cat 4 | 76 – Cat 4 | 978 – Cat 2 |
| 45 – Cat 1 | 56 – Cat 4 | 71D – Cat 4 | 76L – Cat 4 | |
VoIP desk phone categories
Category 1: Campus network is fully resilient – it has battery and generator backup, redundant power components, and a modern telecommunication space. Network is generally expected to remain operational during a power outage as long as the generator is functioning normally. If the generator or cooling fails the network should function for a limited time before failing.
Category 2: Campus network has limited resiliency. We expect that in a power or cooling failure that the network will continue to function for at least 15 minutes but may fail if the outage continues.
Category 3: Campus networks have little resiliency. We expect that in a power or cooling failure the network will fail immediately.
Category 4: VoIP phones are not available in this building. Only non-VoIP traditional phones types will be offered.
Traditional wired phone categories
Category A: Full resiliency for traditional wired digital/analog phones – they are served from a remote building by an Avaya Media Gateway. The supporting equipment has battery and generator backup as well as redundant paths for outgoing calls. These phones are generally designed to remain available indefinitely during a power outage.
Category B: Local resiliency for traditional wired digital/analog phones – they are served from within this same building or complex by an Avaya Media Gateway. The supporting equipment has battery and generator backup and redundant paths for outgoing calls, but shares the generator and other resiliency features with the campus network and other services in the building. These phones are generally designed to remain available indefinitely during a power outage.
Category C: Limited resiliency for traditional wired digital/analog phones – they are served from within this same building or complex of buildings by an Avaya Media Gateway and have battery backup that is designed to last for 2 hours in the event of a power failure. There is no generator backing and in the event of an extended power outage phones are expected to fail after 2 hours.
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