Scott wrote: > On Fri, 2009-04-03 at 17:12 -0400, Andy Spitzer wrote: > > Woof! > > > > On Fri, 03 Apr 2009 16:35:06 -0400, Scott Lawrence > <[email protected]> wrote: > > > > Marten: > > > No CDR, no alert > > > > Scott: > > > which is a significant improvement over the proxy being > down and no > > > ambulance. > > > > Okay, enough bitching. > > > > Is there a way to provision the phones to try the proxy > first, then go > > direct it that doesn't work (best of both worlds?) > > well, we could do that with an 'emergency' SRV record 1/2 :-)
Polycoms allow multiple emergency servers to be defined, so it is possible without SRV. But sipXconfig currently only generates config for the first server, so additional implementation would be required. Also Dale makes a good point that phones should fallback to an IP address, in case the DNS server is down. LG-Nortels on the other hand have only one emergency server. Furthermore the config only accepts an IP (not FQDN), so SRV is not even an option. Using a port other than 5060 doesn't seem to be an option either. I'm waiting for clarification from LG-Nortel on these, but doubt it will change before 4.0. While we're on the topic, there's a limitation in the sipXconfig automatic gateway dialing functionality itself. The Emergency Dial Rule contains an (optional) PSTN prefix, so both 911 and 9911 trigger the rule. As we have been discussing, Polycoms and LG-Nortels are at this point automatically configured to send 911 calls directly to the gateway. But 9911 calls will always be sent via the proxy, which is inconsistent, and therefore probably a bad idea. Polycoms and LG-Nortels could be configured to send 9911 directly to the gateway with phone profiles changes. Of course the gateway would require configuration in order to strip the 9 and dial 911. For an Audiocodes this must be done directly in that gateway's Web UI, since this configuration is not handled by sipXconfig. Here's how you'd do the configuration in the Audiocodes Web GUI: http://sipx-wiki.calivia.com/index.php/HowTo_configure_AudioCodes_Stand- Alone_Survivability_Feature#AudioCodes_Gateway_IP_-.3E_Tel_Destination_N umber_Manipulation (In defense of sipXconfig, the need to configure these settings only arose a few weeks ago when we started looking at the Audiocodes SAS feature.) On the other hand, both Polycoms and LG-Nortels do allow configuration that would have the phone strip the 9 from 9911. The phone would send only 911, so no gateway configuration would be required. This would also need additional sipXconfig implementation though. Probably not for 4.0, but maybe for 4.2? Any objections to a JIRA for this? (Damian?) So we have some issues. At some point we'll figure out what (if anything) we're going to change for 4.0. Once we do, I think we should make sure the issues are well documented. I'm offering to do the first draft of a Wiki page on this We can then review it on this list to make absolutely sure its correct. Sound good? -Paul [email protected] _______________________________________________ sipx-dev mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-dev Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-dev
