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Grandstream Networks, Inc. GXP User Manual Page 34 of 38
Firmware 1.1.5.15 Last Updated: 12/2007
Enable 100rel
PRACK (Provisional Acknowledgment) method enables reliability to SIP
provisional responses (1xx series). This is required to support PSTN inter-
networking..
Account Ring Tone
There are 4 uniquely defined ring tones:
• One (1) System Ring Tone: when selected, all calls will ring with system
ring tone.
• Three (3) Customer Ring Tones: when selected, incoming calls from
designated account will play selected ring tone.
Send Anonymous
If this parameter is set to “Yes”, the “From” header in outgoing INVITE message
will be set to anonymous, essentially blocking the Caller ID from displaying.
Anonymous Method
Whether to use “sip:anonymous@anonymous.invalid>” in the From Header or P-
Asserted-Identity header.
Anonymous Call
Rejection
Default is NO. If set to YES, anonymous call will be rejected
Auto Answer
Default is No. If set to “Yes”, GXP will automatically switch on speaker to answer
the incoming call. Set to Intercom/Paging mode, it will answer the call based on
the SIP info header from the server.
Allow Auto Answer by
Call-Info
If the Call-Info header contains answer-after=0, the call be answered
automatically (so called paging mode).
Turn off speaker on
remote disconnect
When BYE is received, the phone will turn off its speaker automatically.
Check SIP User ID for
incoming INVITE
Check the SIP User ID in Request URI. If they don’t match, the call will be
rejected.
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.
Disable Multiple Media
Attribute in SDP
Default is No.
Preferred Vocoder
GXP supports up to 5 different Vocoder types including G.711(a/µ) (also known
as PCMU/PCMA), GSM, G.723.1, G.729A/B.
Configure Vocoders in a preference list that is included with the same preference
order in SDP message. Enter the first Vocoder in this list by choosing the
appropriate option in “Choice 1”. Similarly, enter the last Vocoder in this list by
choosing the appropriate option in “Choice 8”.
SRTP Mode
Enable SRTP mode based on selection. Default is No.
eventlist BLF URI
If a server supports this feature, user needs to configure an "eventlist BLF" URI
on the service side (i.e.: BLF1006@myserver.com)
On the GXP, under Account page, fill in the ""eventlist BLF" field with the URI
without the domain. (i.e.: BLF1006). Under Basic Settings, please select "eventlist
BLF", choose account nubmer, monitored number, etc.