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.