
UC2000-VE/F/G GSM/CDMA/WCDMA VoIP Gateway User Manual
_______________________________________________________________________________
Shenzhen Dinstar Co., Ltd.
73
But for two stage dialing, the SIP server must be dial the SIP channel account and
then to generate DTMF to mobile network.
Answer Delay
In most instances, Most of CDMA operators don't offer answer signal. The gateway
doesn’t response SIP 200 OK to SIP server in case of missing answer signal from
CDMA network. Answer delay is to fix this issue and generate SIP 200 OK to SIP
server after answer delay timeout. Default value is 5 seconds. Moreover, it is
available for CDMA gateway only.
Redirect Call when All Port Busy
When the gateway is running heavy traffic and not possible to call out, the call will
redirect to specific destination route as configuration.
IP and Port: destination gateway or IPPBX to be redirect
Play Voice Prompt for PSTN Incoming Calls
Default setting is Yes. when the gateway receive incoming from mobile, it will play
default/customized voice prompt to caller party. Default voice prompt is "Please dial
the extension "; if set to No, the device will play dial tone instead of voice prompt.
RTP Detect
This option is to disconnect call when there is no RTP received. Default value is 90s
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 behind the NAT (or multiple NAT) client part to identify their clients’ public