6-2 CHAPTER 6: SUPPLEMENTARY VOICE FEATURES

telephone company should provide the appropriate commands.

The 3C882 ISDN modem will announce a forwarded call by producing a short ring on the telephone that is routed to the forwarded number.

ISDN Call Waiting

ISDN Call Waiting allows you to place a voice call on hold while you answer an incoming voice call.

By default, ISDN Call Waiting is disabled on analog port 2 (S76=1). To avoid potential call interruptions when sending or receiving a fax transmission, you should therefore install your fax machine on analog port 2.

Table 6-1 How to Use Call Waiting

How Do I

Do This

 

 

Place the first call on hold and

When you hear the call waiting indicator, press and

answer the second?

immediately release the switch hook button.

Place the second call on hold

Press and release the flash hook. The second call is

and then switch back to the first

then put on hold.

call?

 

End the first call and then answer the second call?

What if the call on hold is dropped?

Hang up the telephone, wait for the telephone to ring, and then answer the call.

If the call on hold hangs up at the far end, you will receive no notice. If you press and release the switch hook button, you will get a dial tone, indicating that the call on hold was dropped. Press and release the switch hook button again to return to the previously active caller.

What if the active caller hangs up?

If the active caller hangs up, the call on hold remains on hold until you retrieve it by pressing and immediately releasing the switch hook button. If you hang up while a call is on hold, the telephone will ring to indicate that there is a call on hold. If you do not retrieve the call within 6 seconds, the call is dropped.