It is possible to use a name of domain completely different from uses on network. But it is more 
useful to define a sub-domain of network domains. If there are sub-domains in network, it can be a 
sub-domain of this sub-domain. 
Example: if network domain is my-subdomain.my-domain.com, OT domain can be my-otsubdomain. 
my-subdomain.my-domain.com. 
To update OT already configured, use server-rehosting.sh to change OT host domain 
5.1.4  Linux DEBIAN used as DHCP server 
Exp of config file : 
#Config file update history 
#ED03: grouped VHE and 4018 phonesets 
authoritative; 
ddns-update-style interim; 
ignore client-updates; 
#deny unknown-clients; 
option space ALU_ICTouch; 
option ALU_ICTouch.ConfigServerPath code 67 = text; 
class "vendor-classes" {match option vendor-class-identifier;} 
subclass "vendor-classes" "alcatel.ictouch.0" { vendor-option-space ALU_ICTouch;} 
subnet 172.25.191.0 netmask 255.255.255.0 { 
 option domain-name-servers 172.25.179.100; 
 option domain-name "qa.npi.com"; 
 option routers 172.25.179.101; 
 option broadcast-address 172.25.179.255; 
 option subnet-mask 255.255.255.0; 
 default-lease-time 43200;                               # 12 hours 
 max-lease-time 44000; 
  option vendor-encapsulated-options 3a:02:00:65; 
 range 172.25.191.117 172.25.191.118; 
} 
group { 
#VHE phonesets group on TSSD234 (Patrick) 
 next-server 172.25.179.101; 
 option tftp-server-name "172.25.179.101"; 
 option ALU_ICTouch.ConfigServerPath "/DMP/dmictouch/"; 
    host vhe2test { 
     hardware ethernet 00:80:9F:A0:36:AE; 
#VLAN 101 
     option vendor-encapsulated-options 3a:02:00:65; 
     fixed-address 172.25.191.117; 
  } 
} 
5.1.5  Date and time synchronization on OTBE 
Symptom : no External NTP server then don’t use NTP at all. 
Solution : Put manually the time on the OT and executing hwclock --systohc, rebooting the system 
Virtual machines will use the date and time of the OT after a restart of the server. 
After that to keep things in sync, configure NTP in the vmOXE (swinst menu – Expert) and in the vm8770 
(windows time sync I think…). 
5.1.6  OS language for Open Touch 
Only en-US language is supported for Open Touch OS 
To check : [root@tsse106 ~]# locale 
LANG=en_US.UTF-8 
LC_CTYPE="en_US.UTF-8" 
LC_NUMERIC="en_US.UTF-8"