ZyXEL 202H 91-003-194003B User Manual

P-202H Plus v2 User’s Guide

147

Chapter 13 Supplementary Phone Services

3 When you are ready to conference the two calls together, press the flash key to establish a 

three-way-conference call.

4 Hang up the telephone. The ISDN network does an implicit transfer to directly connect 

Caller A with Caller B.

1 Once you have an active call (Caller A), press the flash key to put the existing call on 

hold and receive a dial tone.

2 Dial the third party's telephone number (Caller B).

3 Before Caller B picks up the call, you can transfer the call by pressing the flash key. The 

call is automatically transferred.

Call forwarding means the switch will ring another number at a place where you will be when 
someone dials your directory number.

There are two methods of activating call forwarding. The first is exactly the same as on an 
analog line, i.e., you pick up the handset and dial the access code assigned by your telephone 
company and the number that you want the calls forwarded. Check with your telephone 
company for this access code.

The second is with the "phone flash" commands where you pick up the handset and press the 
flash key before dialing the following:

Either method should work fine, and you can use whichever one you are most comfortable 
with.

The ZyXEL Device sends a single short ring to your telephone every time a call has been 
forwarded (US switches only).

Table 46   Phone Flash Commands

*20*forward-number#

Activate CFB (Call Forwarding Busy)

*21*forward-number#

Activate CFU (Call Forwarding Unconditional)

*22*forward-number#

Activate CFNR (Call Forwarding No Reply)

#20#

Deactivate CFB

#21#

Deactivate CFU

#22#

Deactivate CFNR