2N VoiceBlue Next v3.7 User Manual
Page 48
48
IP addresses
SIP Proxy (IP
GSM) IP address of the SIP Proxy from which
/
–
2N VoiceBlue
®
awaits the GSM outgoing call requirements.
Next
SIP Proxy (GSM
IP) – IP address of the SIP Proxy to which
/
2N VoiceBlue
®
turns in the case of a GSM incoming call.
Next
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 to
2N VoiceBlue Next
®
fill in this field if
operates in a private network separated
2N VoiceBlue Next
®
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 configure
2N VoiceBlue Next
®
the frequency of queries sent to the STUN server.
Tip
In case you keep the default values (0.0.0.0),
will
2N VoiceBlue Next
®
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!
Tip
Should there occur call errors (one-way audibility, connection errors,
e.g.), check the settings of all active elements on the VoIP call route. To
detect the problems quickly, you can test the Point-to-Point connection
with a software IP phone (SJ phone, e.g.) in your PC and use tracing by
means of a network analyser (WireShark –
e.g.) at
the same time.
Refer to
for easy tracing through
.
2N VoiceBlue Next
®