SIP-DDI (SIP Trunking)
SIP-DDI (SIP Trunking)
Some VoIP providers also support a VoIP PTP connection with a Direct
Dial In option. The provider allocates a PBX base number with additional
Direct Dial In numbers (DDI numbers), e.g., 9200–0.
COMpact 5200/5200R/5500R - Firmware V7.4A - Advanced Information V08 06/2019
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