hello! i was just wondering, since i'm still new here, where will i config this? i'm using debian sarge amd64 and ser 0.9.4.
 
DNS SVR Resource Records
It is important that your SIP clients can connect to your server for purposes of registration and call control. You might even want to have a redundant server to handle calls if your primary server is unavailable.
These requirements can be meet by using DNS SVR Resource Records, available in BIND 8.X and up releases.
The format for a SVR RR is this: 
_service._protocol        SVR Priority Weight     Port hostname
In this case we want to establish an entry for our primary SIP server, gateway.mydomain.com, that will listen on UDP port 5060. The entry will look like this: 
_sip._udp         SRV     0  0   5060  gateway.mydomain.com
Placement of the new resource record is important. Here is a sample zone file: 
; zone 'mydomain.com'   last serial 1998071308  $ORIGIN com.  mydomain  86400           IN      SOA     gateway.mydomain.com. postmaster.mydomain.com. (                                          1998111908 ; Serial                                          36000 ; Refresh                                          900 ; Retry                                          36000 ; Expire                                          28800 ); Minimum                  IN      NS              gateway.mydomain.com.                  IN      NS              ns3.backupdomain.com.                  IN      MX              1 gateway.mydomain.com.                  IN      A               192.168.0.1    ;If we place the SRV record above the next line it fails to load 
 $ORIGIN fitawi.com.  _sip._udp               SRV  0 0  5060  gateway.mydomain.com.  gateway         IN      A               192.168.0.1  www             IN      CNAME           gateway.mydomain.com.
After reloading your zone file you can verify that the entry is working by using dig. 
dig -t SRV _sip._udp.mydomain.com
The results should look something like this: 
; <<>> DiG 9.1.0 <<>> -t SRV _sip._udp.mydomain.com  ;; global options:  printcmd  ;; Got answer:  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32654  ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1    ;; QUESTION SECTION:  ;_sip._udp.mydomain.com.          IN      SRV    ;; ANSWER SECTION:  _sip._udp.mydomain.com.   86400   IN   SRV   0 0 5060 gateway.mydomain.com.    ;; AUTHORITY SECTION:  mydomain.com.             86400   IN      NS      ns3.elsewhere.com. 
 mydomain..com             86400   IN      NS      gateway. mydomain.com.    ;; ADDITIONAL SECTION:  gateway. mydomain.com.     86400   IN      A       192.168.0.150    ;; Query time: 6 msec  ;; SERVER: 192.168.0.150#53(192.168.0.150)  ;; WHEN: Tue Dec  3 08:34:17 2002  ;; MSG SIZE  rcvd: 132
thanks in advance!
ryan

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