Version 7.2
355
Mediant 500 MSBR
User's Manual
20. Control Network
DNS Resolve Method
dns-resolve-method
[ProxySet_DNSResol
veMethod]
Defines the DNS query record type for resolving the proxy server's host
name (FQDN) into an IP address(es).
[-1]
= Not configured. DNS resolution method is according to the
settings of the global parameter, ProxyDNSQueryType.
[0]
A-Record = (Default) DNS A-record query is used to resolve DNS to
IP addresses.
[1]
SRV = If the proxy address is configured with a domain name
without a port (e.g., domain.com), an SRV query is done. The SRV
query returns the host names (and their weights). The device then
performs DNS A-record queries per host name (according to the
received weights). If the configured proxy address contains a domain
name with a port (e.g., domain.com:5080), the device performs a
regular DNS A-record query.
[2]
NAPTR = NAPTR query is done. If successful, an SRV query is sent
according to the information received in the NAPTR response. If the
NAPTR query fails, an SRV query is done according to the configured
transport type. If the configured proxy address contains a domain name
with a port (e.g., domain.com:5080), the device performs a regular DNS
A-record query. If the transport type is configured for the proxy address,
a NAPTR query is not performed.
[3] Microsoft Skype for Business = SRV query as required by Microsoft
when the device is deployed in a Microsoft Skype for Business
environment. The device sends a special SRV query to the DNS server
according to the transport protocol configured in the 'Transport Type'
parameter (described later in this section):
TLS:
"_sipinternaltls_tcp.<domain>" and "_sip_tls.<domain>". For
example, if the configured domain name (in the 'Proxy Address'
parameter) is "ms-server.com", the device queries for
"_sipinternaltls_tcp.ms-server.com" and "_sip_tls.ms-server.com".
TCP:
"_sipinternal._tcp.<domain>" and "_sip_tcp.<domain>".
Undefined:
"_sipinternaltls_tcp.<domain>",
"_sipinternal_tcp.<domain>", "_sip_tls.<domain>" and
"_sip_tcp.<domain>".
The SRV query returns the host names (and their weights). The device
then performs DNS A-record queries per host name (according to the
received weights) to resolve into IP addresses.
Note:
An SRV query can return up to four host names. For each host
name, the subsequent DNS A-record query can resolve into up to 15 IP
addresses. However, the device supports up to 30 DNS-resolved IP
addresses. If the device receives more than this number of IP addresses, it
uses the first 30 IP addresses in the received list and ignores the rest.
Proxy Address Table
Index
proxy-ip-index
[ProxyIp_ProxyIpInde
x]
Defines an index number for the new table row.
Note:
Each row must be configured with a unique index.
Summary of Contents for Mediant 500 MSBR
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Page 115: ...Part III General System Settings ...
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Page 137: ...Part IV General VoIP Configuration ...
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Page 455: ...Part V Gateway Application ...
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Page 837: ...Part X Status Performance Monitoring and Reporting ...
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Page 927: ...Part XI Diagnostics ...
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