Alti-IP 600H Manual 21
1. Press * * 6, then the ENTER button.
2. Scroll to the program key to configure.
3. Enter the appropriate digits for the speed dial number or feature code.
The digits will be automatically dialed when this function key is pressed.
Dialing an IP Number Directly from the Alti-IP 600H
To dial an IP number directly from the Alti-IP 600H phone set, enter the IP
address using the * key to enter periods followed by the # key.

Notes:

This only works when the Alti-IP 600H is operating in basic mode.
If the Alti-IP 600H is configured for a public IP address, you can call
other public IP address devices.
If the Alti-IP 600H is configured for a private IP address, you can call other
private IP address devices that you can “see” or that are on your subnet.
Headset Port Support
Important:Contact AltiGen for the most current list of certified headsets.
A headset port is added to the back of the phone chassis. When enabled by
the administrator, the IP phone user will be able to activate a third-party
headset. The pin outlet for headset support is specified below:
Pin 1 (Tx-), Pin 2 (Rx1), Pin 3 (Rx2), Pin 4 (Tx+)
The port has a separate volume control and voice stream switching among
speaker, handset, and headset. The 10th programmable key is assigned as
the headset offhook/onhook switch through the IP Phone Configuration
page in AltiWare Administrator.
To use the headset, the user can go offhook or onhook by pressing the
headset button.
Note: For the Alti-IP 600H, if using Plantronics H91N or H101N
headsets, in order to plug in these headsets to the headset port, a
separate Plantronics cable should be used (and must be ordered
separately: part # 27190-01).