User manual

DSCP field is a superset of TOS, its definition is backward-compatible with TOS, and its value can be
from 0 to 63, with 0 for minimum priority, 63 for max priority.
Support Tag-based VLAN 802.1P/802.1Q.
VLAN 802.1P/802.1Q are for local area network standard recommended by IEEE, which can partition
network users from different physical locations into several logical subnets. The UTG7204-ON IP-PBX
supports this standard, and can add special VLAN Tag to data frames passing through.
8.7.5 Update System Prompts
Currently, the system prompt is provided in English version. For non-English version, please contact
your supplier or more details.
8.7.6 Busy Detection Settings
The Busy Tone of Public Switched Telephone Network (PSTN) are different from region to region, and
it may cause line hanging at the FXO port. This is because that the FXO port can not recognize and
detect the local busy tone, and the IP PBX will thus remain Off-Hook. In this case, you need to adjust
the settings for Busy Detect.
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