Pity it doesn't accept PoE as an alternative power source for a UPS-backed PoE switch solution. I know it is less efficient power-wise, but nevertheless useful if power needs distributing to a few locations.

Yealink do on their VoIP bases but AFAIK they don't have an equivalent to the N300 with a POTS connection - only VoIP supported.

Yeah even as they stand I think they're great little units. Been around forever too. Quite surprised by how little power they actually draw. I've been logging it most of the afternoon, with and without calls - its not come close to drawing 1W.

In reply to a post by tdw42:

Pity it doesn't accept PoE as an alternative power source for a UPS-backed PoE switch solution. I know it is less efficient power-wise, but nevertheless useful if power needs distributing to a few locations.

Yealink do on their VoIP bases but AFAIK they don't have an equivalent to the N300 with a POTS connection - only VoIP supported.

I tried to find that out without success, do you know what spec they are? HAve a few 24v & 48v injectors spare and I can then reinstall mine in a better location.

According to the datasheet: Power over Ethernet (IEEE 802.3af), Class 1.

As no negotiation for greater power (802.3at or 802.3bz) is required a passive 48V PoE injector should also work if the Yealink accepts both Alternative A and Alternative B (a.k.a. Mode A and Mode B). The powered device (PD) should accept both so will operate from power sourcing equipment (PSE) providing either, some manufacturers skimp and this is not the case (and also doesn't apply for passive PoE, often 24V, such as that used by Mikrotik and Ubiquiti).

The data/spec sheet I have here does not show it ... I have a few spare injectors, passive and AF and will give it a try! Recently got 4xUbiquiti AF injectors for £7!



And yes, Ubiquiti can be a nuisance, most Unifi uses 48v in some form, but their AirMax is 24v so with remote cameras over a radio link, inline 48-24 adapters are needed (or additional PoE injectors).

I was looking at https://www.yealink.com/upfiles/products/datasheet/Y... https://www.yealink.com/upfiles/products/datasheet/Y... and https://www.yealink.com/upfiles/products/datasheet/Y...

Those injectors were an absolute bargain at that price.

Thanks, W60B is what I have but te documentation supplied does not show PoE, but your link does. The wallwarts supplied sticks out a long way and are obtrusive.

The injectors were on ebay - took a chance and they are legiotimate, even still wrapped/sealed in the original plastic.

The Gigaset N510 IP Pro does do PoE........ but not POTS - may be an option for those who have gone VoIP already.

In reply to a post by MHC:

Thanks, W60B is what I have but te documentation supplied does not show PoE, but your link does. The wallwarts supplied sticks out a long way and are obtrusive.

The injectors were on ebay - took a chance and they are legiotimate, even still wrapped/sealed in the original plastic.

PoE is my default UPS - handily keeps the WiFi running on the various AP's. WiFi Calling for backup happy days.

In reply to a post by Pheasant:

In reply to a post by Pheasant:

In reply to a post by candlerb:

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I see that particular model only has a rated capacity of 2200mAh, which assuming 3.7V lithium cells is 8.1Wh. It might power a router and ONT for for 30 to 60 minutes if you're lucky; that will go down as the cells age.

If you have a decent mobile signal where you live, then a mobile phone may be a better bet for emergency calls.

Got one here on test...

Currently running a CRS-305-1G-4S. Been running 1 hour and 23 minutes so far and looks like there is plenty of capacity left. I'll run it till it dies and let you know.

Also have a spare N330A-IP DECT base kicking around, so will test on that too; talk time and standby time.

I don't do BT, so cant check with a SH2 unfortunately.

As above I ran the test on a little Mikrotik CRS-305-1G-4S using the Eaton mini UPS to hold it up and got a fairly respectable 3 hours 17 minutes and 51 seconds before the Eaton gave up.

I will have to measure the exact power consumption of the MikroTik when its at idle - but from what I've read it here should be 10 watts in idle, with a max. observed of 13 watts.

Unfortunately I've not been able to test the Gigaset N300A IP DECT base with this UPS as none of the supplied DC barrel tip will fit the N300's power input port. I will have to either splice the lead from the plug pack or make an small adapter lead up with a female to male barel adapter arrangement. So for now I cant say how long it would hold up the N300A.

At some point I may rig it up to an Openreach 1+1 ONT and give that a try.

Well to circle back on this slightly, in the name of presenting all the facts - I checked the actual power draw of the CRS-305-1G-4S and its no where near 10 watts in idle - its actually 3.078 watts (@ 19V input) - measured directly from a DC bench power supply. So not such a good or even remotely close proxy for anything approaching the alleged power draw of a Smart Hub 2 etc...

So that explains why the Eaton battery backup could stand it up for nearly 3.5 hours.

After the post-crimbo port and pudding blowout, I'll sneak a 1+1 ONT onto the bench supply and see how long it stands it up. I've got a spare ONT kicking around - expect the ONT will have consumption closer to 2 W