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This is the support site for Andrews & Arnold Ltd, a UK Internet provider. Information on these pages is generally for our customers but may be useful to others, enjoy!

Incoming VoIP Features: Difference between revisions

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We will look up SRV records if there are any and will follow those. SRV records make routing SIP to you very flexible. SRV records are able to specify the SIP port used, in this case we will try that port. SRV records also allow you to specify multiple hosts with priorities. SRV records will help you create a resilient SIP system at your side by using multiple SIP servers etc.
 
===More about SRV Records===
An example of using srv records would be as follows: Say you have two VoIP servers and they have the public IPs of 192.0.2.50 and 192.0.2.60 and you want to give it the DNS name of a-pbx.example.com and b-pbx.example.com. You'd create the following DNS records for it as follows:
 
a-pbx.example.com. A 192.0.2.50
b-pbx.example.com. A 192.0.2.60
_sip._udp.pbx.example.com. SRV 1 0 5060 a-pbx.example.com.
_sip._udp.pbx.example.com. SRV 1 0 5060 b-pbx.example.com.
 
In the AAISP control pages, you'd enter pbx.example.com as the server hostname, our systems will then look up the SRV records and will route the call accordingly.
 
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