Installation and Operation Manual

Table Of Contents
TD 92579EN
10 April 2015 / Ver. N
Installation and Operation Manual
IP-DECT Base Station & IP-DECT Gateway (software version 7.2.X)
151
D.2.2 Local Site Redundancy
If redundancy is wanted in a remote site, that is you want to be able to make emergency
phone call if the WAN connection to the central site goes down, a local site proxy server,
e.g. SRST (Cisco), can be used in the remote site, see figure 19 on page 151.
Figure 19. Redundancy in the remote site using a local site proxy server.
D.2.3 About SRV Records
Record format
An SRV record has the form:.
Service: the symbolic name of the desired service.
Proto: the protocol of the desired service; this is usually either TCP or UDP.
Name: the domain name for which this record is valid.
TTL: standard DNS time to live field.
Class: standard DNS class field (this is always IN).
Priority: the priority of the target host, lower value means more preferred.
_Service._Proto.Name TTL Class SRV Priority Weight Port Target
Master 0
Pari Master
Master 1
Master 2
IP-PBX
IP-PBX
IP-PBX
IP-PBX
DNS Server
Master 3
Pari Master
Local site proxy server
Remote site
WAN
Central site