Greetings,

We are currently testing a Sipura SPA-3000 as a gateway from our Asterisk system to a PSTN line for 911 access. We have a number of locations and want to place an SPA-3000 in each, connected to a PSTN line that will provide the correct ANI/ALI information to 911 for each location.

It all works great, except for a reasonably significant (4 seconds) delay between when the SPA-3000 answers the SIP call from the Asterisk server (immediately upon dialing, according to the Asterisk CLI) and the ringing tone begins (the remote phone begins ringing at that same time).

The delay is enough for users to think that the phone isn't working - not what you want for 911!

Any ideas?

Regards,
--
Anthony Rodgers
Business Systems Analyst
District of North Vancouver
Web: http://www.dnv.org
RSS Feed: http://www.dnv.org/rss.asp

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