Other Useful Features
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.
*9* z #
z
Verified or own Account Number
Before an outgoing call:
Press.
Enter Account Number and press.
Valid digits
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.
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.
88 | BusinessPhone – Ericsson Dialog 4425 IP Vision |