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I've used these gateways and never experienced any of these problems. I
could imagine me missing the popping noise but I do know that MWI did
work just fine.<br>
<br>
Steve Totaro wrote:
<blockquote
cite="midDFB93BD730105941BD1A782A1EE9E95CCDCD@1-0fa9e300af524.asteriskhelpdesk.com"
type="cite">
<blockquote type="cite">
<pre wrap="">-----Original Message-----
From: <a class="moz-txt-link-abbreviated" href="mailto:asterisk-users-bounces@lists.digium.com">asterisk-users-bounces@lists.digium.com</a> [<a class="moz-txt-link-freetext" href="mailto:asterisk-users">mailto:asterisk-users</a>-
<a class="moz-txt-link-abbreviated" href="mailto:bounces@lists.digium.com">bounces@lists.digium.com</a>] On Behalf Of Stephen Bosch
Sent: Wednesday, May 02, 2007 1:36 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Digital Phones
Salvatore Giudice wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Nortel digital Meridian phones are like $400/each. At least that was
</pre>
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</blockquote>
<pre wrap=""><!---->the
</pre>
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<blockquote type="cite">
<pre wrap="">price of the phones at a hotel I did a job for recently.
</pre>
</blockquote>
<pre wrap="">Still?
(Is Nortel even making these phones anymore? I thought they spun off
their telephone set division -- anybody heard of Aastra? ;) )
</pre>
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<pre wrap="">When you go to SIP, you may save on the capital costs for the
</pre>
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</blockquote>
<pre wrap=""><!---->phones,
</pre>
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<pre wrap="">but
</pre>
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<pre wrap="">other costs will increase. These are related to:
1.) increased support requirements for supporting VoIP
2.) additional licensing may be required from your vendor to support
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->SIP
</pre>
<blockquote type="cite">
<pre wrap="">or
</pre>
<blockquote type="cite">
<pre wrap="">IP media
3.) increased costs associated with mitigating potential damages
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->since
</pre>
<blockquote type="cite">
<pre wrap="">your
</pre>
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<pre wrap="">voice services are now subject to the same outages as your network
4.) increased training costs for staff to become proficient in VoIP
5.) increased costs associated with monitoring QoS
6.) increased costs associated with reconfiguring your network for
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->VoIP
</pre>
<blockquote type="cite">
<pre wrap="">and
</pre>
<blockquote type="cite">
<pre wrap="">QoS - many times new switches may have to be purchased in addition
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->to
</pre>
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<pre wrap="">SBC's
</pre>
<blockquote type="cite">
<pre wrap="">etc
7.) additional costs associated with rewiring physical space to
</pre>
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<pre wrap="">accommodate
</pre>
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<pre wrap="">additional Ethernet ports required for phones
</pre>
</blockquote>
<pre wrap="">Yes, 7 times.
</pre>
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<pre wrap="">Sometimes, if you already have digital - it may not be worth
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->switching
</pre>
<blockquote type="cite">
<pre wrap="">to
</pre>
<blockquote type="cite">
<pre wrap="">SIP even if you save a ton on the handsets. Whenever we switch over
</pre>
</blockquote>
</blockquote>
<pre wrap=""><!---->a
</pre>
<blockquote type="cite">
<pre wrap="">hotel
</pre>
<blockquote type="cite">
<pre wrap="">to VoIP, we always run into these extra 'hidden' costs.
If you want to do digital with asterisk, I think you'll need a T1/E1
multiplexer that supports digital phones.
</pre>
</blockquote>
<pre wrap="">Is this anything like a channel bank, only for digital phones?
Can you suggest any examples?
-Stephen-
</pre>
</blockquote>
<pre wrap=""><!---->
Citel makes SIP to Digital gateways. I have had poor experience with
them and doubt I would try it again without seeing many improvements
listed in their firmware releases.
Just to clarify, I had loud bursts of static when first picking up or
originating a call, phones resetting for no reason, regular interval
popping sounds. Citel fixed the popping sound by replacing one of the
gateways but the other issues were never fixed.
Also, the phones did not act the way I would have liked. When dialing,
only a beep was heard, not actual DTMF and stutter dialtone MWI could
not be disabled even though the phone I used had a MWI light and LCD
display showed messages.
Thanks,
Steve Totaro
<a class="moz-txt-link-freetext" href="http://www.asteriskhelpdesk.com">http://www.asteriskhelpdesk.com</a>
KB3OPB
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