Erratic Ringing for PAP2T-NA and SPA-2102 Phone Adapters

I thought I’d pass along a tip for people with Cisco/Linksys PAP2T-NA or SPA-2102/3102 phone adapters.  I was having difficulties the phone ring tone on a PAP2T-NA being erratic (which can be heard in the file “DefaultRing.mp3”).  It was especially noticeable to the customer as they had their phone connected to a loud ringer and the fluctuation in sound was amplified.

After some research on the Internet I found that this can be controlled somewhat by the ATA itself.  If you go into the Advanced Settings as the Administrator User, under “Regional Settings” you’ll find this section.  Below are the defaults:

I found that if you changed the Waveform, Voltage and Frequency to Sinusoid, 90 and 25 (Waveform, Voltage, Frequency) it had a dramatic effect on the sound of the ring.  This can be heard in the file named “DefaultRing-Sinusoid-90V-25Freq.mp3”.

Windows Server 2012

If you aren't a techie, you might not understand why so many of us are probably salivating and being giddy.  Well Microsoft has released (yesterday) the latest version of its Server operating system, Windows Server 2012.  I'm not going to rehash any details other sites may cover, so I'll just direct you to Ars Technica's First Look.

Dial Plans for an SPA8000

It's been a while since I've posted anything to this blog, but I want to change that.  Here is an issue that dogged me for a bit with a customer of mine, which I thought I'd share the resolution for.

My customer who'd ordered a SIP trunk to replace their copper telephone lines, had an older Meridian Telephone System.  This system didn't support the configuration of a SIP trunk directly.  My solution was to use a SPA-8000, an 8-port IP Telephony Gateway from Cisco/Linksys.