單項選擇題

CIG 6838聯(lián)通版HGU是雙協(xié)議棧的, SIP&H.248共版本,兩種協(xié)議可以用下面哪條命令切換為SIP,重啟后生效

A、 /s/tr069 set InternetGatewayDevice.Services.VoiceService.1.VoiceProfile.1.X_CT-COM_ServerType SIP
B、 /s/t/ set InternetGatewayDevice.Services.VoiceService.1.VoiceProfile.1.X_CU_ServerType SIP
C、 /s/tr069 set InternetGatewayDevice.Services.VoiceService.1.VoiceProfile.1.X_CT-COM_ServerType MEGACO
D、 /s/t set InternetGatewayDevice.Services.VoiceService.1.VoiceProfile.1.X_CT-COM_ServerType MEGACO
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