# ANI/DNIS/ISDN Number Delivery - Conditions

- ANI and DNIS numbers are available on incoming trunk calls only. This service is provided by the central office.

- Only T1/D4 DID trunks that are programmed with a digital DID trunk circuit descriptor, or T1/D4 E&M trunks that are programmed with a digital E&M trunk circuit descriptor can receive ANI and DNIS digits.

- An ANI/DNIS trunk must use DTMF signaling and have a Wink Timer (see ANI/DNIS Protocols).

- US Sprint and MCI standards are supported. US Sprint standard can transmit both ANI and DNIS numbers delimited by * symbols. MCI standard transmits either ANI only or DNIS only— no delimiters are used. The system treats any digits without delimiters received over DID trunks programmed to receive ANI/DNIS as DNIS. For non-DID trunks, digits without delimiters will be treated as ANI (see ANI/DNIS Protocols).

- Call routing on DNIS numbers is programmed in the Trunk Attributes form. Digit modification is available for DNIS numbers.

- The ANI/DNIS feature option is available with MS2006 software or later.

- ANI/DNIS trunks use DTMF receivers. Therefore, if you add ANI/DNIS trunks to the system, you may need to increase the number of DTMF receivers.

- When the system does not receive all the ANI/DNIS digits for a call, the Mitel display telephones and consoles show only those digits that were received. The display does not indicate that the displayed number is missing digits.

- The system accepts the first 10 ANI digits and the first 10 DNIS digits sent with a call. All subsequent digits of each are ignored.

- ANI and DNIS digit displays take priority over advanced analog networking digits, trunk group names, trunk names and trunk numbers.

- If the system does not receive any ANI or DNIS digits for a call, then the Mitel display set or console shows the standard trunk information of the call instead.

- ANI and DNIS digit displays follow standard call forwarding rules (See Call Forward).

- If the system does digit modification on a DNIS number, the modified DNIS number is displayed.

Related Topics

- ANI/DNIS/ISDN Number Delivery Description

- ANI/DNIS/ISDN Number Delivery Programming