User's Manual
FIRMWARE VERSION 1.0.0.3 GXP2140 USER MANUAL   Page 42 of 77 
Expiration 
re-registration request before the Register Expiration. The default value is 0. 
Local SIP Port 
Defines  the  local  SIP  port  used  to listen  and  transmit.  The  default  value  is 
5060 for Account 1, 5062 for Account 2, 5064 for Account 3, 5066 for Account 
4, 5068 for Account 5, 5070 for Account 6. 
SIP Registration Failure 
Retry Wait Time 
Specifies the interval to retry registration if the process is failed. The default 
value is 20 seconds. 
SIP T1 Timeout 
SIP T1 Timeout. The default setting is 0.5 seconds. 
SIP T2 Timeout 
SIP T2 Timeout. The default setting is 4 seconds. 
SIP Transport 
Determines the network protocol used for the SIP transport. Users can choose 
from TCP, UDP and TLS. 
SIP URI Scheme when 
using TLS 
Specifies  if  "sip:"  or  "sips:"  will  be used  when TLS/TCP  is  selected  for  SIP 
Transport. The default setting is "sips:". 
Use Actual Ephemeral 
Port in Contact with 
TCP/TLS 
Defines  whether  the  actual ephemeral port in contact  with  TCP/TLS  will  be 
used or  not.  This  is  used  when TLS/TCP  is  selected  for  SIP Transfer. The 
default setting is "No". 
Remove OBP from route 
Configures  to  remove  outbound  proxy  from  route.  This  is  used  for  the  SIP 
Extension to notify the SIP server that the device is behind a NAT/Firewall. 
Support SIP Instance ID 
Defines whether  SIP  Instance ID is supported  or not.  The default setting is 
"Yes". 
SUBSCRIBE for MWI 
When set to "Yes", a SUBSCRIBE for Message Waiting Indication will be sent 
periodically.  The  phone  supports  synchronized  and  non-synchronized  MWI. 
The default setting is "No". 
SUBSCRIBE for 
Registration 
When set to "Yes", a SUBSCRIBE for Registration will be sent out periodically. 
The default setting is "No". 
Enable 100rel 
The  use  of  the  PRACK  (Provisional  Acknowledgment)  method  enables 
reliability to SIP provisional responses (1xx series). This is very important in 
order  to  support  PSTN  internetworking.  To  invoke  a  reliable  provisional 
response, the 100rel tag is appended to the value of the required header of the 
initial signaling messages. 
Caller ID Display 
When  set  to  "Auto",  the  phone  will  look  for  the  caller  ID  in  the  order  of 
P-Asserted Identity Header, Remote-Party-ID Header and From Header in the 
incoming SIP INVITE. When set to "Disabled", all incoming calls are displayed 
with  "Unavailable".  When  set  to  "From  Header",  the  phone  will  display  the 
caller ID based on the From Header in the incoming SIP INVITE. The default 
setting is "Auto". 
Use Privacy Header 
Controls whether the Privacy Header will present in the SIP INVITE message 
or not. The  default  setting  is  "default",  which  is  when "Huawei IMS" special 










