Siemens CX203isdn 사용자 설명서

SX303/353isdn / englisch / A31008-X353-B100-2-7619 / telephony.fm / 14.11.2005

You get an external call or you are making a call and receive an external call. The call is 

signalled acoustically and also shown in the display on all telephones or handsets in this 

MSN group. You can reject this external call. 
Press the display key 

REJECT

. 

Depending on the setting (page 96) the call can be rejected on the base station rejecting 

the call only (telephones or handsets with the same receive MSN continue to ring) or it 

can be rejected for the entire MSN group (the caller hears the busy tone). 

Your ISDN connection offers you 2 simultaneously usable telephone lines (B channels).
Precondition: You want to make calls externally, but both telephone lines of your 

connection are busy (being used by other internal users). 
Press the display key 

CALLBCK

. The next available free line will be reserved for you. 

You base station rings as soon as an external line is free. 

Even if you have defined an individual send MSN for the base station (page 94), you can 

select another MSN as the send MSN before each call, e.g. for individual recording of 

charges.
Make sure that the send/receive MSN corresponds to the phone number registered at 

your SMS centre (page 47).
By factory default, MSN next call

is not activated for an MSN. 

c

Lift the receiver. You can now enter the phone 

number as usual. 

[RRRRRRRRRRRRRRRRRRRRRRRRRRR]

Press the display key. The reservation is cancelled.

i

If the reservation is neither accepted or deleted, it will be deleted 

automatically after 30 sec.

i

Open the menu.

s

Select the menu item and confirm.

s

Select the menu item and confirm.

s

Select the menu item and confirm.

s

Select the required MSN and confirm

(

‰

= activated). 

The next call uses this MSN.

j

Hold down (back to idle status).