2N StarGate/BlueTower v5.7 User Manual
Page 76
76
Codec Priority
Set the types of the speech codecs to be preferred.
Priority 1
Priority 2
Priority 3
Priority 4
IP Addresses
– required IP address of the VoIP card of the connected gateway.
VoIP board
SIP proxy (IP / GSM) – the SIP proxy IP address from which 2N StarGate /
®
awaits the GSM outgoing call requests.
BlueTower
SIP proxy (GSM
IP)
/
– the SIP proxy IP address to which 2N StarGate /
®
turns in the case of GSM incoming calls.
BlueTower
SIP registrar – SIP registration server IP address.
NAT firewall – NAT firewall IP address.
STUN server – STUN server IP address (Simple Traversal of UDP through NATs
(Network Address Translation)) for obtaining the public IP address with which 2N
operates in the Internet. You are recommended to
StarGate / BlueTower
®
complete this field if
is installed in a private
2N StarGate / BlueTower
®
network separated from the Internet via NAT or firewall. The pre-set port for
sending requests to STUN is 3478.
Next STUN request (60–6553, 0=off) [s] – update of information on the 2N
public IP address. Use this parameter to configure the
StarGate / BlueTower
®
frequency of queries routed to the STUN server.
Tip
If you keep the default values (0.0.0.0),
will
2N StarGate / BlueTower
®
receive requests from any IP address.
Tip
You can use the domain name
for the
Registration domain (realm)
SIP
,
and
IP
proxy (IP
GSM)
/
SIP proxy (GSM
IP)
/
SIP registrar
addresses on condition that you complete the domain name Registration
and set the
properly in the
domain (realm)
DNS server address
Web
section.The
and
configuration
Ethernet configuration
/
SIP proxy
IP addresses must be set to the default value (0.0.0.0).
SIP registrar
Note
In case the GSM gateway is installed behind the NAT, make proper routing
settings in the NAT router for the relevant ports (SIP, RTP, STUN).
Integrated firewalls can also affect VoIP calls!