AASTRA 4425 IP Vision for BusinessPhone User Guide - Manual (Page 88)

Other Useful Features
BusinessPhone – Dialog 4425 IP Vision 88
Account Number
An Account Number can be entered to debit telephone costs to
different accounts. Depending on the system configuration the
Account Number has to be entered from a Verified Account
Number list (predefined) or you can invent an own Account
Number. The following prerequisites apply:
• With the Verified Account Number you can restrict the making
of external calls (not a specific number or area), so everyone
who is allowed to make external calls will receive an Account
Number which has to be used each time he/she wants to make
an external call.
• Verified Account Numbers contain up to 10 digits.
• Own Account Numbers contain up to 15 digits.
The Account Numbers can also be used via the DISA function, see
section “ Direct Inward System Access (DISA) ” on page 87.
Verified or own Account Number
Before an outgoing call: *9*
Press.
z #
Enter Account Number and press.
Valid digits 0-9. Internal dial tone. Make the external call.
DTMF Tones
The DTMF function - also known as Suffix Dialling - is used to
control answering machines or any other telecommunication
devices. This function is permanently active during a call.
z
Make an internal or external call to reach the desired device.
When your call is answered you can continue to dial digits which
will be sent as DTMF digits (tone signals) to the called device in
order to activate the desired functions.