DWG2000E/F/G GSM/CDMA VoIP Gateway User Manual
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Shenzhen Dinstar Technologies Co., Ltd.
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DTMF
DWG2001/DWG2004/DWG2000B-8G support RFC2833 and SIGNAL two ways.
DTMF INTERVAL range is 50 ~ 800ms, DTMF VOLUME can use the default
Configuration
Nat Traversal
Include Static NAT, Dynamic NAT and STUN
STUN (Simple Traversal of UDP over NATs) is a network protocol. It is allowed to
stay be
hind the NAT (or multiple NAT) client part to identify their clients’ public
address, found himself after what Type of NAT and NAT for a particular Channel is
bound to a local Internet terminal Channel. This information is used for two host to
set up UDP communication behind the same NAT router. The agreement defined by
the RFC 3489
Other configuration
Enable Private Service
To enable local services like *158# etc.
User ID Is Phone Number
Default is No. user=phone will be added in SIP message body when this option
enabled.
Only Accept Calls from SIP Server
Default is No. All calls will be rejected except calls from SIP server. IP Trunk will not
work when this option enabled.
Allow Call from PSTN to IP without Registration
Refer to "SIP Configuration" ->
"Is register”. If "Is register" setting is no, this option