Specifications

29. UPS & Power Consumption
IP Office Matrix - Release 8.1 (2)
Page 88
Note4:
Default PoE
Class "L"
One
BM12
Two BM12 Three BM12
9608 Class 1 L L H
9611G Class 1 H H H
9641G Class 2 L L L
Notes for the Nortel 1xxx phones:
Typical Use defined as: Two Ethernet ports linked at maximum speed, light traffic, backlight on, active on a handsfree call,
no accessories connected.
This represents a typical in-use scenario. Idle power will be lower Power measured at phone with 2 m cord. Longer cord will
result in higher power due to cable loss.
Power can vary from sample to sample and with activity on the phone, or with accessories connected
IEEE 802.3af Class number is determined by peak power, not typical or idle power.
The use of an Uninterrupted Power Supply (UPS) with any telephone system is recommended. Even at sites that
rarely lose electrical power, that power may occasionally have to be switched off for maintenance of other
equipment. In addition, most UPSs also provide an element of power conditioning, reducing spikes and surges.
The capacity of UPS systems and the total equipment load the UPS is expected to support are usually quoted
in VA. Where equipment load is quoted in Watts, multiply by 1.4 to get the VA load.
The calculation of how much UPS capacity is required depends on several choices.
• What equipment to place on the UPS?
Remember to include server PCs such as the voicemail. It is recommended that the total load on a new UPS
is never greater than 75% capacity, thus allowing for future equipment.
• How many minutes of UPS support is required?
Actual UPS runtime is variable, it depends on what percentage of the UPSs capacity the total equipment load
represents. For example, a 1000VA capacity UPS may only support a 1000VA (100%) load for 5 minutes. This
relationship is not linear, the same UPS would support a 500VA (50%) load for 16 minutes. Therefore the
lower the percentage of capacity used, the increasingly longer the UPS runtime, typically up to 8 hours
maximum. Remember also that for most UPS's the ratio of discharge to full recharge time is 1:10.
• How many output sockets does the UPS provide?
Multiple UPS units may be required to ensure that every item of supported equipment has its own supply socket.
*There is a sticker on the back of the 1616 which will provide the material code. If the material code is 700450190 or 700458540, the
**The 4620SW that require Class 3 power can be identified by the ethernet jacks that point straight out of the back of the telephone,
***Note: when using the 1616 phone with more than 1 BM32, an external power supply is needed.
Note1: The EU24 adds less than 1W to the 4620 and 462xSW numbers. The EU24BL (1.5W) should not be used with POE, use the
Note2: The GigE adapter for the 46xx phones will work with Class 0, 1 or 2 phones. Class 0 devices may require use of a local power
Note3: Assuming that your PoE source supports Class 3 power, you should never be forced to aux power a 96xx phone. All phones
Note that the GigE adapter starts out in Class 3 – so if we take any phone and plug a GigE adapter to it, the Ethernet switch must
• Power consumption measured using Power over Ethernet IEEE802.3af standard powering — The measurements were taken as average
Note: Typical is measured off-hook sample size 1. Worst Case is analytical. Except the 4601, 4602, 5601 and 5602 all telephones had a