2N VoiceBlue MAX v1.4 User Manual
Page 47
47
Codec priority
preferential speech codec setting:
Priority 1
Priority 2
Priority 3
IP addresses
SIP Proxy (IP GSM) IP address of the SIP Proxy from which
–
2N VoiceBlue
®
awaits the GSM outgoing call requirements.
MAX
SIP Proxy (GSM IP) – IP address of the SIP Proxy to which
2N VoiceBlue
®
turns in the case of a GSM incoming call.
MAX
SIP registrar – IP address of the SIP registration server.
NAT firewall – IP address for the NAT firewall.
STUN server – IP address of the STUN (Simple Traversal of UDP through NATs
(Network Address Translation)) server for obtaining the public IP address under
which
operates in the Internet network. You are advised
2N VoiceBlue
®
MAX
to fill in this field if
operates in a private network
2N VoiceBlue
®
MAX
separated from the Internet using the NAT or firewall. The default port for
sending requests to STUN is 3478.
Next STUN request (60–6553, 0=off) [s] – used for refreshing information on the
public IP address of
. By editing this item you can
2N VoiceBlue
®
MAX
configure the frequency of queries sent to the STUN server.
Tip
In case you keep the default values (0.0.0.0),
will
2N VoiceBlue
®
MAX
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 located behind the NAT, make sure that the
NAT router routing settings for the appropriate ports (SIP, RTP, STUN) are
made. The integrated firewalls may affect VoIP calls too!