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_sip._udp.example.com 86400 IN SRV 10 100 5060 examplecorp.dyndns.net
_sip._tcp.example.com 86400 IN SRV 10 100 5060 examplecorp.dyndns.net

Notes on DNS & SRV Records with Polycom Phones

A flaw in Polycom's SRV record use has been identified. Polycom phones don't honor the DNS SRV weight, but they do honor the priority. What this means is that they don't resort the list of records when they get it from DNS. Most DNS servers by default produce the SRV records in cyclical order. This means that there are only 3 combinations that the records will show up in.

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