Recommendation/advice searched to IP telephone system/concept - VoIP General, VoIP News, VoIP Providers, VoIP hardware, VoIP software, VoIP Technology

Hello,

we planenen a removal with our office. Since I consider for a long time with IP-Telefonie dear outer gel, I whether I use the removal as an opportunity to transfer now.

Before I however in technology invest money here, experiences and pieces of advice would interest me, which already made others with comparable concepts.

At present we still have a T-COncept Analage with USDN telephones.

In our new location lie close:
- Versatel ISDN/DSL 6000
- 1 S0 ISDN connection
- GB-Lan network

I would work gladly outward further over ISDN however in the office IP-Telefonie to use.

Are there concerning the price affordable, reliably fuinktionierende and plants which can be administered easily which I outward at ISDN and at us LAN to internally tie up can?

You experiences like strongly IP-Telefonie the LAN loaded. Does one have to count on quality losses with the Telfonieren, if one opens larger files?

Does one know with IP telephones classical ISDN of characteristics as, faults, display for call number, announcement occupies line, Rufumleitung to illustrate?

I would be pleased, if perhaps their me a few recommendations regarding the technology could give and your experiences with similar concepts describes, so that I can measure, which comes there to me.

To invest I can into the entire equipment (plant/4 telephones) approx. 1500 EUR.

Ciao
Heiko

You a Auerswald COMpact 5010/5020 looks at. These support 4 with appropriate module 2VoIP/6VoIP then and/or. 8 VoIP channels. Costs of 5020 with 6VoIP-Modul: approx. EUR 460 gross.

As telephone budget remained thereby approx. 1,000 EUR, i.e. You could you e.g. 4 x Auerswald COMfortel VoIP 2500 procure (approx. EUR 180 gross for each equipment).

In sum would approx. be this. EUR 1,180 gross. The management of the plant effected is based by Browser.

The telephones are system telephones, i.e. support all functions mentioned. More favorable are if necessary. a few snom 3xx of telephones, which can be used likewise at the plant. Contrary to system telephones there are however reductions (e.g. during signaling of park positions, line occupancy).

With a Gigabit LAN it should come to no substantial impairments of the VoIP traffic, which will be to telephone in sum below 0,2 Mbit/s for each. The use of a central Switches is important, so that Unicast data streams run from each other separated. Thus file transfers do not impair the internal VoIP connections. If you liked to be prepared, use a SWITCH, which supports QoS. But then also still place is in the budget

With VoIP after externally it can come naturally to impairments, i.e. that rout should also QoS support.

If a telephone on the job uses the same LAN connection as the there PC/server, it can come naturally also to reciprocal effects, but with a Gbit LAN this should not really seem, since servers files do not deliver also with Gbit range

You should internally analyze the motivation for VoIP however again. Why exactly would you like to do this? What are the advantages? Usual ISDN or UP0-Telefone is more favorable and will finally one ticks nevertheless more durably to work. They can be used (one per job shifted normally nevertheless there double doses) likewise. Indications for VoIP are if necessary. Distances, over which ISDN or UP0 are to be used not simply, and/or. missing lines, so that the Telefonie must run also over LAN.

--gandalf.

Quotation:

Quotation of more hhilscher

Since I consider for a long time with IP-Telefonie dear outer gel, I whether I use the removal as an opportunity to transfer now.

Gandalf is right: Please analyze before realization of your project, why You IP-Telefonie to begin want. If it concerns to you only IP-Telefonie as “self purpose”, then you should not transact the investment, v.a. if your old facility of everything (!) has, which needs it.

Some different one of your questions already answered Gandalf to you. Beside the hardware plant Auerswald 5020 would e.g. give it. the possibility of using a software-based Tk-plant. For Windows connoisseurs is there e.g. offered. 3CX on, which gives it in abgespeckter version even free of charge. And should you a halfway efficient server have, could this “Tk-plant” e.g. run along with VMWare free of charge on it. A gateway to the ISDN would only be still necessary. And as telephones know its Grandstream, Aastra or Snom take - co-operate rather approximately with 3CX.

Greeting,

Hendrik

1) the office possesses a plug socket for the NTBA on all 3 floors, has however no wiring for a S0-Bus.

2) We shift a straight wiring for a GB network. Unfortunately any longer sufficient place for a further cable is not in the break-throughs in the covers.

3) Our ISDN telephone system has a away-gotten with a power failure 4 weeks ago ago, so that we would have to buy a new there.

Therefore I, it thought no bad idea IP-Telefonie would be to be used. I times will examine the possibility of the use of radio telephones now.

Thank you for the Tipps.

Ciao
Heiko

One does not have to accomplish a ISDN wiring as bus. That is anyway not so quite meaningfully, there one then typically more than two devices to a bus hangs themselves and thus the telephones if necessary. mutually to block can, if one tries to lead more than two telephone calls parallel. Thus: per bus of two devices, star wiring.

I would not recommend radio telephones personally, since I would have something against the EM-radiation…

Perhaps VoIP is internal the correct way… that sounds now already more thereafter, because the wiring is a Limitation for ISDN/UP0. For only four telephones I would be however careful with investments. There there is nevertheless certainly also still fax and a few more telephones, if the company grows

--gandalf.