Grandstream

    Grandstream Overrides

    The VoIP Help Page Team·6 min read·Last updated: March 14, 2026

    **Scope:**

    The below codes will allow you to set overrides in the program of Grandstream GXP series phones.

    Requirements:

    • Text editor
    • Access to NDP server

    Wallpaper Branding GXP2130 & GXP2135

    P2917="<server url to .jpg>"

    P2916="1"

    Branding GXP2140 & GXP2160

    P2917="<server url to .jpg>"

    P2916="1"

    Protection from SIP Scanners

    # Accept Incoming SIP from Proxy Only. 0 - No, 1 - Yes. Default is 0

    P2347="1"

    Use Random Port

    # Use Random Port. 0 - No, 1 - Yes. Default is 0, Mandatory

    P78="1"

    Manual Weather Update

    # City Code, 0 - Use Self-Defined City Code, 1 - Automatic. Default is 1

    P1405="0"

    # Self-Defined City ZIP Code

    P1377="<ZipCode>"

    Screensaver Settings

    # Screensaver. 0 - No, 1 - Yes. Default is 1

    P2918="0"

    Auto Answer by Department

    # Allow Auto Answer by Call-Info. 0 - No, 1 - Yes. Default is 0

    P298="1"

    # Custom Call-Info for Auto Answer.

    P2356="internal"

    Line Mode and Account Mode

    # Key Mode. 1 - Line Mode, 2 - Account Mode. Default is 1

    P8369="1"

    Jitter Buffer

    # Jitter Buffer Type. 0 - Fixed, 1 - Adaptive. Default is 1

    P133="1"

    # Jitter Buffer Length. 0 - 100ms, 1 - 200ms, 2 - 300ms, 3 - 400ms, 4 - 500ms, 5 - 600ms, 6 - 700ms, 7 - 800ms, Default is 2

    P132="2"

    Manually Set NTP Server

    # Allow DHCP Option 42 to override NTP server. 0 - No, 1 - Yes. Default is 1

    P144="0"

    Manually Set Time Zone

    # Allow DHCP Option 2 to override Time Zone setting. 0 - No, 1 - Yes. Default is 1

    P143="0"

    Self-Defined Time Zone

    # Self Defined Time zone. Max length allowed is 64 characters

    P246="<ZipCode>"

    Local Call Features

    # Local Call Feature 0-disable 1-enable default is 0.

    P191="0"

    Directed Call Pickup w/BLF Keys

    # Force BLF Call-pickup by prefix. 0 - No, 1 - Yes. Default is 0

    P6752="1"

    # BLF Call-pickup Prefix. Default is **

    P1347="*35"

    Firmware and Configuration Servers

    # Firmware Server Path

    P192="<firmware url path>"

    # Config Server Path

    P237="<provisioning server url>"

    # Firmware Upgrade Via. 0 - TFTP Upgrade, 1 - HTTP Upgrade, 2 - HTTPS Upgrade. Default is 1

    P212="1"

    # Firmware Upgrade and Provisioning

    # 0 - Always Check For New Firmware, 1 - Check New Firmware only when F/W pre/suffix changes, 2 - Always Skip the Firmware Check

    P238="0"

    # Automatic Upgrade. 0 - No, 1 - Yes. Default is No

    P194="1"

    Set MPK Keys - For firmware 1.0.8.xx and lower only

    Load the file below into Notepad or Notepad++. Replace x with the prefix of the extension numbers. I.e. x01 to 101.

    # Key Mode, Account, String, User ID

    # Key Mode.

    # 0 - Speed Dial, 1 - BLF, 2 - Presence Watcher, 3 - eventlist BLF

    # 4 - Speed Dial via active account, 5 - DialDTMF, 6 - Voicemail, 7 - CallReturn

    # 8 - Transfer, 9 - CallPark, 10 - Intercom, 11 - LDAP Search, 13 - Multicast Paging

    # 14 - Record

    # Number: 0-11, 13, 14

    # Mandatory

    # Account. 0 - Account 1, 1 - Account 2, 2 - Account 3, 3 - Account 4, 4 - Account 5, 5 - Account 6

    # Number: 0, 1, 2, 3, 4, 5

    # Mandatory

    # MPK 1

    P323="1"

    P301="0"

    P302="x00"

    P303="x00"

    # MPK 2

    P324="1"

    P304="0"

    P305="x01"

    P306="x01"

    # MPK 3

    P325="1"

    P307="0"

    P308="x02"

    P309="x02"

    # MPK 4

    P326="1"

    P310="0"

    P311="103"

    P312="103"

    # MPK 5

    P327="1"

    P313="0"

    P314="x04"

    P315="x04"

    # MPK 6

    P328="1"

    P316="0"

    P317="x05"

    P318="x05"

    # MPK 7

    P329="1"

    P319="0"

    P320="x06"

    P321="x06"

    # MPK 8

    P353="1"

    P354="0"

    P355="x07"

    P356="x07"

    # MPK 9 - MPK 24 - GXP2160 only

    # MPK 9

    P357="1"

    P358="0"

    P359="x08"

    P360="x08"

    # MPK 10

    P361="1"

    P362="0"

    P363="x09"

    P364="x09"

    # MPK 11

    P365="1"

    P366="0"

    P367="x10"

    P368="x10"

    # MPK 12

    P369="1"

    P370="0"

    P371="x11"

    P372="x11"

    # MPK 13

    P373="1"

    P374="0"

    P375="x12"

    P376="x12"

    # MPK 14

    P377="1"

    P378="0"

    P379="x13"

    P380="x13"

    # MPK 15

    P381="1"

    P382="0"

    P383="x14"

    P384="x14"

    # MPK 16

    P385="1"

    P386="0"

    P387="x15"

    P388="x15"

    # MPK 17

    P389="1"

    P390="0"

    P391="x16"

    P392="x16"

    # MPK 18

    P393="1"

    P394="0"

    P395="x17"

    P396="x17"

    # MPK 19

    P1440="1"

    P1441="0"

    P1442="x18"

    P1443="x18"

    # MPK 20

    P1444="1"

    P1445="0"

    P1446="19"

    P1447="19"

    # MPK 21

    P1448="1"

    P1449="0"

    P1450="x20"

    P1451="x20"

    # MPK 22

    P1452="1"

    P1453="0"

    P1454="x21"

    P1455="x21"

    # MPK 23

    P1456="1"

    P1457="0"

    P1458="x22"

    P1459="x22"

    # MPK 24

    P1460="1"

    P1461="0"

    P1462="x23"

    P1463="x23"

    Set MPK Keys - For firmware 1.0.9.xx and higher only

    Load the file below into Notepad or Notepad++. Replace x with the prefix of the extension numbers. I.e. x01 to 101.

    # Key Mode, Account, String, User ID

    # Key Mode.

    # -1 - None, 0 - Line, 1 - shared line,10 - Speed Dial, 11 - BLF, 12 - Presence Watcher, 13 - Eventlist BLF, 14 - Speed Dial via active account, 15 - DialDTMF,

    # 16 - Voicemail, 17 - CallReturn, 18 - Transfer, 19 - CallPark, 20 - Intercom, 21 - LDAP Search, 23 - Multicast Paging, 24 - Record, 25 - Call Log

    # 26 - Monitored Call Park, 27 - Menu

    # Number: -1, 0,1,10-21,23-27

    # Mandatory

    # Account. 0 - Account 1, 1 - Account 2, 2 - Account 3, 3 - Account 4, 4 - Account 5, 5 - Account 6

    # Number: 0, 1, 2, 3, 4, 5

    # Mandatory

    # MPK 1

    P1364="0"

    P1363="0"

    P1466="x00"

    P1465="x00"

    #MPK 2

    P1366="0"

    P1365="11"

    P1468="x01"

    P1467="x01"

    #MPK 3

    P1368="0"

    P1367="11"

    P1470="x02"

    P1469="x02"

    #MPK 4

    P1370="0"

    P1369="11"

    P1472="x03"

    P1471="x03"

    #MPK 5

    P1372="0"

    P1371="11"

    P1474="x04"

    P1473="x04"

    #MPK 6

    P1374="0"

    P1373="11"

    P1476="x05"

    P1475="x05"

    #MPK 7

    P23801="0"

    P23800="11"

    P23803="x06"

    P23802="x06"

    #MPK 8

    P23805="0"

    P23804="11"

    P23807="x07"

    P23806="x07"

    #MPK 9

    P23809="0"

    P23808="11"

    P23811="x08"

    P23810="x08"

    #MPK 10

    P23813="0"

    P23812="11"

    P23815="x09"

    P23814="x09"

    #MPK 11

    P23817="0"

    P23816="11"

    P23819="x10"

    P23818="x10"

    #MPK 12

    P23821="0"

    P23820="11"

    P23823="x11"

    P23822="x11"

    #MPK 13

    P23825="0"

    P23824="11"

    P23827="x12"

    P23826="x12"

    #MPK 14

    P23829="0"

    P23828="11"

    P23831="x13"

    P23830="x13"

    #MPK 15

    P23833="0"

    P23832="11"

    P23835="x14"

    P23834="x14"

    #MPK 16

    P23837="0"

    P23836="11"

    P23839="x15"

    P23838="x15"

    #MPK 17

    P23841="0"

    P23840="11"

    P23843="x16"

    P23842="x16"

    #MPK 18

    P23845="0"

    P23844="11"

    P23847="x17"

    P23846="x17"

    #MPK 19

    P23849="0"

    P23848="11"

    P23851="x18"

    P23850="x18"

    #MPK 20

    P23853="0"

    P23852="11"

    P23855="x19"

    P23854="x19"

    #MPK 21

    P23857="0"

    P23856="11"

    P23859="x20"

    P23858="x20"

    #MPK 22

    P23861="0"

    P23860="11"

    P23863="x21"

    P23862="x21"

    #MPK 23

    P23865="0"

    P23864="11"

    P23867="x22"

    P23866="x22"

    #MPK 24

    P23869="0"

    P23868="11"

    P23871="x23"

    P23870="x23"

    Enable Attended Transfer

    P1376="1"

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