User's Manual
Table Of Contents
FIRMWARE 1.0.3.4  GXW42XX USER MANUAL  PAGE 25 OF 56 
CALL FEATURES 
GXW4248 supports the traditional telephony features available in a PBX as well as additional advanced 
telephony features. 
TABLE 6: CALL FEATURES TABLE (STAR CODE) 
Key  Call Features 
*02 
Forcing a Codec (per call) 
*027110 (PCMU), *027111 (PCMA), *02723 (G723), *02729 
(G729), *0272616 (G726-r16), *0272624 (G724-r24), *0272632 (G726-r32), *0272640 (G726-
r40), *027201 (iLBC) 
*03  Disable LEC (pe call) Dial “*03” + ” number ”. No dial tone is played in the middle. 
*16 
Enable SRTP 
*17  Disable SRTP 
*30  Block CallerID (for all-config change) 
*31  Send CallerID (for all-config change) 
*67  Block CallerID (per call) 
*82  Send CallerID (per call) 
*47 
Direct IP Calling. Dial “*47” + “IP address”. No dial tone will be played in the middle. Detail see 
Direct IP Calling section on page 12. 
*50 
Disable Call Waiting 
(for all-config change)
*51  Enable Call Waiting (for all-config change) 
*69 
Call Return Service: 
Dial *69 and the phone will dial the last incoming phone number 
received. 
*70  Disable Call Waiting (Per Call) 
*71  Enable Call Waiting (Per Call) 
*72 
Unconditional Call Forward: Dial “*7
2” and then the forwarding number followed by “#”. Wait 
for dial tone and hang up. (dial tone indicates successful forward) 
*73  Cancel Unconditional Call Forward: Dial “*73” and wait for dial tone, then hang up. 
*74 
Enable Paging Call: Dial “*74” and t
hen the destination phone number you want to activate in 
Paging mode. 
*78  Enable Do Not Disturb (DND): When enabled all incoming calls will be rejected. 
*79  Disable Do Not Disturb (DND): When disabled, incoming calls will be accepted. 
*87  Blind Transfer 










