DP750/DP720 Administration Guide
Version 1.0.11.4
Do Not Escape ‘#’
as %23 in SIP URI
Replaces “#” by “%23” when sending SIP packets. Default is No.
Disable Multiple m
Line in SDP
Sends only one m line in SDP, regardless of how many m fields are in the incoming
SDP. Default is No.
Adds “Privacy” header if special feature is set to “Default”, and not “CBCOM”.
Use P-Preferred-
Identity Header
Adds “PPI” header if special feature is set to “Default”, and not “CBCOM”.
This option is used to configure default ringtone. If set to “Yes”, configured default
ringtone will be played. The default setting is No.
This option specifies to whether add MAC address to SIP messages or no. The
option can be set to:
No: If set to “No”, MAC address will not be added to SIP messages in the
User-Agent header.
Yes except REGISTER: If selected, MAC address will be included in all
SIP messages sent from the base station except for SIP REGISTER
messages used to register/unregister accounts.
Yes to all SIP: If selected, MAC address will be included in all SIP
messages sent from the base station without exceptions.
Example of User-Agent Header including MAC address:
User-Agent: Grandstream DP750 1.0.4.10 000b828708a5
Default setting is No.
SIP Settings - Session Timer
Enables/Disables the Session Timer Support. Default is Yes.
Enables periodic refresh of SIP session via a SIP request (UPDATE, or re-INVITE).
When the session interval expires and there is no refresh via an UPDATE or re-
INVITE message, the session will be terminated. Session Expiration is the time at
which the session is considered timed out, if no successful session refresh
transaction occurs beforehand. Default is 180 seconds.
Defines Minimum session expiration (in seconds). Default is 90 seconds.
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