2N VoiceBlue MAX v1.0 User Manual
Page 44
44
Codecpriority
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
Tip
In case you keep the default values (0.0.0.0), 2N VoiceBlue
®
will receive requests from any IP address.
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 to
2N VoiceBlue
®
MAX
fill in this field if
operates in a private network separated
2N VoiceBlue
®
MAX
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
®
MAX
the frequency of queries sent to the STUN server.
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
e.g.) at the same time.
Refer to
for easy tracing through
2N VoiceBlue
®
.
MAX
Tones generated to VoIP
Ring tone to VoIP – generate a ringing tone of your own, or transmit a real
ringing tone from the GSM/UMTS networks.