2N StarGate/BlueTower v5.7 User Manual
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SIP Settings
Use CLIP from INVITE field – define that CLIP from the ‘Contact’ or ‘From’
field shall be used for call routing to GSM/UMTS.
Send 180 ringing instead of 183 session progress
Send 200 OK instead of 180/183
Send 200 OK and BYE when rejected from GSM.
Send 200 OK on REGISTER request – virtual registration of device in 2N
®
gateway (for registration requiring equipment).
StarGate / BlueTower
Replace CLIP from GSM with Caller ID
Deny DTMF according to RFC2833
Use SIP over TCP for registration
Use SIP over TCP for calls
SIP Registration
Registration expires [s] – set the expiration time for the 2N StarGate /
®
gateway registration data with SIP proxy.
BlueTower
Reattempt registration [s] – set the time interval after which the request shall
be resent.
Registration domain (realm)
Caller ID
Username – registration data with SIP proxy.
Password – registration data with SIP proxy.
Voice Parameters
First RTP port (even: 1024 – 65524) – set the number of the first RTP port.
The RTP port number must be even according to the recommendation.
Last RTP port (even: first RTP+10 – 65534) – set the number of the last RTP
port. The RTP port number must be even according to the recommendation. The
recommended minimum RTP port range is 10
Codec Settings
Additional settings for the voice codec used. For the default settings see the table
below.
Codec
Number of blocks
VAD (Voice Activity Detection)
G.711
4
Deactivated
G.729
2
Deactivated
G.723 (6.3 kbps)
2
Deactivated
Caution
Using low rate codecs may deteriorate voice quality!
You have to have a wide-band TCP/IP connection for using a high rate
codec!
You can use an Internet VoIP bandwidth calculator to calculate the
actually required bandwidth (e.g.