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March 8th, 2005, 03:29 AM
| | Junior Member | | Join Date: Jan 2005
Posts: 16
| |  Outbound proxy - proxy-dca.broadvoice.com?
Is this a valid proxy?
My phone is working OK, but BV auto-configured my Sipura Spa-1001 with proxy-dca.broadvoice.com as the outbound proxy. I can't ping nor do an nslookup on this address. Plus, I'm on the west coast...
Anyone know why this seemingly invalid proxy is used? |
March 8th, 2005, 03:38 AM
| | Junior Member | | Join Date: Jan 2005
Posts: 15
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I am using sip.broadvoice.com as both inbound and outbound proxies without issues. |
March 8th, 2005, 03:49 AM
| | Junior Member | | Join Date: Jan 2005
Posts: 16
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Great, I can change this value of course, but I would have to turn off provisioning. My real question is "Why is Broadvoice using a seemingly invalid value to auto-configure the Sipura devices?" |
March 8th, 2005, 01:22 PM
|  | Senior Member | | Join Date: Aug 2004 Location: USA or Japan
Posts: 5,013
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BroadVoice uses a "private" FQDN for its Outbound Proxies along with their own DNS servers when they provision you for a good reason. This gives BV the ability to redirect your registration to a different proxy at will. If they relied upon public DNS servers (and public proxy names) they couldn't react nearly as quickly, as it can take hours for DNS tables worldwide to update.
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March 8th, 2005, 05:27 PM
| | Member | | Join Date: Mar 2005
Posts: 30
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merlant, then if we ask the IP of proxy-dca.broadvoice.com to DNS servers of BV it has to give,
but I tried and no answer comes.
dig @147.135.0.6 proxy-dca.broadvoice.com
Any idea? |
March 8th, 2005, 06:34 PM
| | Junior Member | | Join Date: Mar 2005
Posts: 3
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Try dig @147.135.0.6 proxy.dca.broadvoice.com
not proxy-dca.broadvoice.com |
March 9th, 2005, 01:06 AM
| | Junior Member | | Join Date: Jan 2005
Posts: 16
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Quote: |
Originally Posted by mberlant BroadVoice uses a "private" FQDN for its Outbound Proxies along with their own DNS servers when they provision you for a good reason... | Thanks mberlant. That explains it. I should have thought of that after seeing the DNS entries. |
March 20th, 2005, 04:50 AM
| | Junior Member | | Join Date: Jan 2005
Posts: 11
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Try using a period instead of a hyphen... proxy.dca.broadvoice.com. The address resolves to 147.135.0.128. :-) |
March 20th, 2005, 11:45 AM
| | Junior Member | | Join Date: Jan 2005
Posts: 29
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There is a SRV (service) record in DNS, not a A (address) record, for proxy-dca.broadvoice.com. You can't ping it because it isn't used directly for name -> address resolution; it's used indirectly by returning a prioritized list of hostnames whose A records are then consulted. SRV records are not "private", but use of BV's DNS servers is preferred so that the expiration times the DNS client uses (if it uses them at all) are those set directly by BV.
Read this thread: http://voxilla.com/forum-viewtopic-t-2239.html
Read about SRV records and VoIP: http://www.voip-info.org/wiki-DNS+SRV | |
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