User's Manual
Table Of Contents
    P a g e  | 51  
GXW42xx User Manual 
Version 1.0.5.43 
Remove OBP from Route 
Header 
Default is No. If set to Yes, the Outbound Proxy will be removed from 
the route header. 
Support SIP Instance ID 
Default is Yes. If set to Yes, the contact header in REGISTER request 
will contain SIP Instance ID as defined in IETF SIP Outbound draft. 
Hold Target Before Refer 
Default is Yes. Select whether the gateway will send ReINVITE to hold 
transfer target before sending REFER to transferee. 
Refer-To Use Target Contact 
Default is No. If set to YES, then for Attended Transfer, the “Refer-To” 
header uses the transferred target’s Contact header information.   
SUBSCRIBE for MWI 
Default  is No. When  set to Yes,  a SUBSCRIBE for Message Waiting 
Indication will be sent periodically. 
Enable 100rel 
Enables the use of PRACK (Provisional Acknowledgment) method. 
TEL URI 
The default setting is “Disabled”. If the phone has an assigned PSTN 
Number, this field should be set to “User=Phone” then a “User=Phone” 
parameter will be attached to the “From header” in the SIP request to 
indicate the E.164 number. If server supports TEL URI format, then this 
option needs to be selected. 
Use Request Routing ID in SIP 
Headers 
Default is No. If set to Yes, device will use the configured [Request URI 
Routing ID] in the SIP Header. This option is usually used under a SIP 
trunk account’s configuration. 
Do Not Escape '#' as %23 in 
SIP URI 
If set to “Yes”, device will use ‘#’ instead of %23 in the send URI. 
Disable Multiple m Line in SDP 
Default is No. If  set to  Yes, device will send only one  m  line in  SDP, 
regardless how many m field in the incoming SDP. 
Use Privacy Header 
If  set  to Default,  it will  only  add  Privacy  or PPI  header  when special 
feature is not Telkom SA or CBCOM. 
Use P-Preferred-Identity 
Header 
If  set  to Default,  it will only add  Privacy  or PPI  header  when special 
feature is not Telkom SA or CBCOM. 
SIP REGISTER Contact Header 
Uses 
Default is LAN Address. If set to WAN Address, device will detect its 
WAN address and use it in SIP REGISTER Contact Header. 










