User guide

Forwarding Calls

MSN call forwarding

“MSN call forwarding” is available for ISDN multi-terminal accesses. Using this for-

warding mode, you can forward incoming external calls to external destinations

for each MSN (multiple-subscriber number) – providing you have the necessary

authorisation (see also MSN Call Forwarding starting on page 22).

Call queue

If a call queue is active for your telephone, this is not taken into consideration

when configuring “Immediately” or “On Busy” call forwarding, and its content is

not transferred to the destination terminal. Calls already in the queue can only be

accepted on the original terminal – after you have deactivated call forwarding. If

you have configured “After Delay” call forwarding, an incoming call enters a queue

if it is active and is forwarded after the delay. As with all other forwarded calls, you

can accept the call on the destination terminal.

SIP terminals

On a SIP terminal you cannot use the code-number procedure described here to

activate/deactivate call forwarding. You can also operate the feature with the

OpenCTI 50 additional programme. To do so, the system administrator has to

authorise you to use this programme. For more information, please refer to the

online help of the OpenCom 100 / Aastra 800.

Least Cost Routing

Least Cost Routing (LCR) can be evaluated for call forwarding to external numbers,

providing your system administrator has configured LCR and the LCR application

in the OpenCom 100 / Aastra 800. Ask him about the applicable setting.

Hunt group call numbers

During system configuration, the system administrator can configure call for-

warding destinations for hunt group call numbers. These destinations are called

when all users of a hunt group are busy and/or when a call is not accepted by any

member of the hunt group within a certain time interval.

In addition, the system administrator can determine whether you can forward

incoming calls to the hunt group call number or not. If the system administrator

does not permit call forwarding for your hunt group call number, any call for-

warding that you have programmed on your device is not carried out upon a hunt

group call.

Call forwarding chains

The system administrator can configure the system so multiple call forwarding

instances can be linked one to another to form a chain. A simple example: user A