Does the voice card of the AR1200 support intra-office calls

1

The voice card of the AR1200 supports intra-office calls.

Other related questions:
When a U1981 attendant transfers a call to an intra-office number, does the U1981 check whether the intra-office number is busy or idle?
No.

Failed to call intra-office PSTN numbers
The intra-office prefix needs to be configured no matter the PSTN number or short number of an intra-office user will be called. Calling the PSTN number of an intra-office user fails if the intra-office prefix of the PSTN number is not matched. Therefore, configure an intra-office prefix for the PSTN numbers.

Intra-office calls on the AR used as the IP PBX are normal, but inter-office calls fail to be connected
1. Check whether the country code and area code at both ends are consistent. 2. Check whether users, prefixes, enterprises that trunks belong to, and DN sets at both ends are consistent. 3. Check whether the call prefix is correctly configured, whether call rights are correct, and whether the call attribute of the call prefix is inter-office. 4. Check whether the inter-office trunk configuration is correct and whether the trunk status is normal. 5. Check whether the call prefix is correctly configured and whether the inter-office prefix is bound to the trunk group.

How does the U1900 restrict external users form calling intra-office users?
You can add external users to the calling party blacklist. 1. Add external users to the personal blacklist so that external users cannot call the current user. 2. Add external users to the system blacklist so that external users cannot call all intra-office users.

What does the intra-office or local attribute of a prefix configured on the U1900 mean?
When the prefix of the called number matches the prefix attribute configured on the U1900, the system searches for the intra-office called number first. If the called number cannot be found, the system routes the call based on the office route selection code. Application scenario: When the first several digits of an intra-office number overlap with those of an external number, a prefix conflict occurs. In this scenario, a local intra-office prefix is used. After a local intra-office prefix is configured, the system searches for intra-office numbers first. If no intra-office number matches the prefix, the system calls the external user.

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