TELECOM Digest OnLine - Sorted: Re: VOIP

Re: VOIP

Tony P. (kd1s@nospamplease.cox.reallynospam.net)
Sat, 18 Dec 2004 23:06:03 -0500

In article <telecom23.606.2@telecom-digest.org>,
RickMerrill@comTHROWcast.net says:

> jim@giganews.com wrote:

>> I'm considering VOIP for my home but realistically, how many phones
>> can it support? I've read from 2 sites, 3 and 5 phones so I was
>> hoping what your experience has been? Does it matter who the provider
>> is to answer this question? I presume the phones are the same used as
>> before voip. Just in case, can you buy one base unit with multiple
>> hand sets ?

> It matters what TA (telephone adapter) you use: some only support 1
> REN and some support 3 REN (ringer equivalency number). Remember that
> these are the base sets only, so if you have a cordless baseset it can
> support multiple handsets. The providers will tell you (most likely)
> "one phone". - RM

The Linksys RT31P2 supports 5 REN.

In article <telecom23.606.4@telecom-digest.org>,
spamtrap100@comcast.net says:

> jim@giganews.com wrote:

>> I'm considering VOIP for my home but realistically, how many phones
>> can it support? I've read from 2 sites, 3 and 5 phones so I was
>> hoping what your experience has been? Does it matter who the provider
>> is to answer this question? I presume the phones are the same used as
>> before voip.

> Most VOIP Terminal Adapters (TAs) that I have seen will support
> between 3-5 REN.

> REN stands for ringer equivilence number. A REN of 1.0 is roughly
> equal to the current needed to drive 1 mechanical bell ringer in an
> old 500 style telephone. Modern electronic "chirp" ringers are in the
> neighborhood of 0.3 REN, so driving multiple phones is usually not a
> problem.

> That said, I think someone here recently reported that their VOIP
> service had lowered the max REN of their TA through a config
> option. It apparently took a phone call to get it raised.

That would have been me. But in my case the ring voltage was set to
60VAC instead of 90VAC.

90VAC hasn't stressed the unit any but I do note it gets a little
warm.

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