background image

 

 

P a g e

 |

 

11

   

   

 

 

 

GXP17xx Administration Guide 

Temperature and 

Humidity 

 

Operation:

 0°C to 40°C. 

 

Storage:

    -10°C to 60°C. 

 

Humidity:

    10

  to 90% Non-condensing. 

Package Content 

GXP1760 phone, handset with cord, base stand, universal power supply, network 
cable, Quick Installation Guide, GPL license.

 

Compliance 

 

FCC:

 Part 15 (CFR 47) Class B. 

 

CE  :

  EN55022 Class  B,  EN55024  Class  B,  EN61000-3-2,  EN61000-3-3, 

EN60950-1. 

 

RCM:

 AS/ACIF S004, AS/NZS CISPR22/24, AS/NZS 60950.1 

GXP1780/GXP1782 Technical Specifications 

The following table defines all the technical specifications including the protocols / standards supported, 
voice codecs, telephony features, languages and upgrade/provisioning settings for GXP1780/GXP1782. 

Table 3: GXP1780/GXP1782 Technical Specifications 

Protocols/Standards 

SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS (A record, 
SRV, NAPTR), DHCP, PPPoE, TELNET, TFTP, NTP, STUN, SIMPLE, LLDP, LDAP, 
TR-069, 802.1x, TLS, SRTP, IPv6. 

Network Interface 

Dual  switched  Ethernet  ports  with  integrated  PoE.  Auto-sensing  10/100Mbps 
(GXP1780), 10/100/1000Mbps (GXP1782). 

Graphic Display 

200*80 pixel backlit LCD display. 

Features Keys 

8  line  keys  with  up  to  4  SIP  accounts,  4  XML  programmable  context  sensitive 
Softkeys,  5  navigation/menu  keys,  8  dedicated  function  keys  for:  PHONEBOOK, 
TRANSFER, 

CONFERENCE, 

HEADSET, 

MUTE, 

SEND/REDIAL, 

SPEAKERPHONE, VOLUME. 

 

Voice Codecs 

Support  for  G.729A/B,  G.711µ/a-law,  G.726,  G.722(wide-band),  G.723,  iLBC,  in-
band and out-of-band DTMF(in audio, RFC2833, SIP INFO). 

Auxiliary Ports 

RJ9 headset jack (allowing EHS with Plantronics headsets). 

Telephony Features 

Hold,  transfer,  forward,  5-way  conference,  call  park,  call  pickup,  shared-call-
appearance  (SCA)  /  bridged-line-appearance  (BLA),  downloadable  phonebook 
(XML,  LDAP,  up  to  2000  items),  call  waiting,  call  log  (up  to  500  records),  XML 
customization of screen, off-hook auto dial, auto answer, click-to-dial, flexible dial 
plan,  Hot  Desking,  personalized  music  ringtones  and  music  on  hold,  server 
redundancy and fail-over.

 

HD Audio 

Yes, HD handset and speakerphone with support for wideband audio. 

Base Stand

 

Yes, 2 angle positions available. Wall Mount stand sold separately. 

QoS 

Layer 2 QoS (802.1Q, 802.1P) and Layer 3 (ToS, DiffServ, MPLS) QoS. 

Security 

User and administrator level passwords, MD5 and MD5-sess based authentication, 
256-bit AES encrypted configuration file, SRTP, TLS, 802.1x media access control. 

Summary of Contents for GXP1760

Page 1: ...Grandstream Networks Inc GXP1760 GXP1780 82 Small Business IP Phones Administration Guide ...

Page 2: ...e latest electronic version of this guide is available for download here http www grandstream com support Grandstream is a registered trademark and Grandstream logo is trademark of Grandstream Networks Inc in the United States Europe and other countries CAUTION Changes or modifications to this product not expressly approved by Grandstream or operation of this product in any way other than as detai...

Page 3: ...blic License GPL Grandstream uses software under the specific terms of the GPL Please see the GNU General Public License GPL for the exact terms and conditions of the license Grandstream GNU GPL related source code can be downloaded from Grandstream web site from http www grandstream com support faq gnu general public license gnu gpl information download ...

Page 4: ...13 Configuration Via Keypad 13 Configuration Via Web Browser 19 Definitions 20 Status Page Definitions 20 Accounts Page Definitions 21 Settings Page Definitions 31 Network Page Definitions 42 Maintenance Page Definitions 44 Phonebook Page Definitions 48 NAT Settings 50 Editing Contacts and Click To Dial 50 Saving Configuration Changes 52 Rebooting from Remote Locations 53 Packet Capture 53 Multica...

Page 5: ...P a g e 4 GXP17xx Administration Guide Upgrade Via Web GUI 58 No Local TFTP HTTP Servers 59 Configuration File Download 60 RESTORE FACTORY DEFAULT SETTINGS 61 EXPERIENCING THE GXP1760 GXP1780 GXP1782 62 ...

Page 6: ...Table 7 Settings Page Definitions 31 Table 8 Network Page Definitions 42 Table 9 Maintenance Page Definitions 44 Table 10 Phonebook Page Definitions 48 Table 11 Action URL Supported Events 55 Table 12 Action URL Supported Dynamic Variables 56 Table 13 Action URL Parameters P values 57 Table of Figures Figure 1 Keypad MENU Configuration 18 Figure 2 Web GUI Phonebook Contacts 52 Figure 3 Click to Di...

Page 7: ...n guide for GXP1760 GXP1780 GXP1782 Only major new features or major document updates are listed here Minor updates for corrections or editing are not documented here Firmware Version 1 0 0 38 No major changes Firmware Version 1 0 0 37 No major changes Firmware Version 1 0 0 13 This is the initial version for GXP1760 GXP1780 GXP1782 ...

Page 8: ...ream com sites default files Resources gxp17xx_web_gui zip 1 Screenshots of Login Page 2 Screenshots of Status Pages 3 Screenshots of Accounts Pages 4 Screenshots of Settings Pages 5 Screenshots of Network Pages 6 Screenshots of Maintenance Pages 7 Screenshots of Phonebook Pages ...

Page 9: ...it LCD display the GXP1780 GXP1782 supports 8 dual color lines with 4 SIP accounts 4XML programmable keys 200 x 80 pixel backlight LCD display The GXP1760 GXP1780 GXP1782 contains dual network ports with PoE EHS Electronic Hook Switch with Plantronics headsets superb full duplex hands free speakerphone with advanced acoustic echo cancellation advanced security protection for privacy and compatible...

Page 10: ...f the GXP1760 GXP1780 82 Table 1 GXP1760 GXP1780 GXP1780 Features at a Glance GXP1760 6 lines 200 80 pixel backlit LCD display 4 XML programmable Softkeys 8 Dedicated function Keys 5 way conference GXP1780 GXP1782 8 lines 200 80 pixel backlit LCD display 4 XML programmable Softkeys 8 Dedicated function Keys 5 way conference ...

Page 11: ...ephony Features Hold transfer forward 5 way conference call park call pickup shared call appearance SCA bridged line appearance BLA downloadable phonebook XML LDAP up to 2000 items call waiting call log up to 500 records XML customization of screen off hook auto dial auto answer click to dial flexible dial plan Hot Desking personalized music ringtones and music on hold server redundancy and fail o...

Page 12: ...pixel backlit LCD display Features Keys 8 line keys with up to 4 SIP accounts 4 XML programmable context sensitive Softkeys 5 navigation menu keys 8 dedicated function keys for PHONEBOOK TRANSFER CONFERENCE HEADSET MUTE SEND REDIAL SPEAKERPHONE VOLUME Voice Codecs Support for G 729A B G 711µ a law G 726 G 722 wide band G 723 iLBC in band and out of band DTMF in audio RFC2833 SIP INFO Auxiliary Por...

Page 13: ...t 5V 1A Integrated Power over Ethernet 802 3af Max power consumption 5W Physical Dimension 231mm W x 167mm L x 86mm H Unit weight 0 925kg Package weight 1 55kg Temperature and Humidity Operation 0 C to 40 C Storage 10 C to 60 C Humidity 10 to 90 Non condensing Package Content GXP1780 GXP1782 phone handset with cord base stand universal power supply network cable Quick Installation Guide GPL licens...

Page 14: ...urn to idle screen Note The phone automatically exits MENU mode in these situations An incoming call when the phone is off hook or the MENU mode if left idle for more than 60 seconds The MENU options are listed in the following table Table 4 Configuration Menu Call History Call History sub menu includes the following options Local Call Log Displays answered calls dialed calls missed calls transfer...

Page 15: ...phone Ring Tone Configures different ring tones for incoming call Ring Volume Adjusts ring volume by pressing left right arrow key LCD Contrast Adjusts active LCD contrast by pressing left right arrow key LCD Brightness Adjusts LCD brightness of idle state and active state by pressing left right arrow key Download SCR XML Triggers the phone to download the XML idle screen file immediately The XML ...

Page 16: ...l Makes direct IP call Phone Phone sub menu includes the following options SIP Configures SIP Proxy Outbound Proxy SIP User ID SIP Auth ID SIP Password SIP Transport and Audio information to register SIP account on the phone Call Features Configures call forward features for Forward All Forward Busy Forward No Answer and No Answer Timeout System System sub menu includes the following options Netwo...

Page 17: ...e server for upgrading the phone o Config Server Configures config server for provisioning the phone o Config Upgrade Via Allows users to choose the provisioning method TFTP HTTP or HTTPS for configuration file download o Firmware upgrade via Allows users to choose the firmware upgrade method TFTP HTTP or HTTPS for firmware file download UCM Detect Detect connect UCM server to process auto provisi...

Page 18: ...agnostic All keys names will display on LCD screen before diagnosing Press each key on the phone to remove it from the list of remaining keys to be diagnosed Lift and put back the handset to exit diagnostic mode after all keys have been diagnosed o Certificate Verification This is used to validate certificate chain for the server s certificate Factory Reset It is used to restore the phone to facto...

Page 19: ...lay Language Date and Time Security Headset Type Star key Lock Instant Messages Voice Mails NTP Server DHCP Option42 overrides NTP Time Zone DHCP Option2 overrides Time Zone Self Defined Time Zone Date Display Format Time Display Format Set Current Time Manually Config via Keypad Menu Web Access Mode Disable SSH Firmware Server Config Server Config Upgrade Via Firmware Upgrade via Internet Protoco...

Page 20: ...ly to the PC port on the back of the phone If the phone is properly connected to a working Internet connection the IP address of the phone will display in MENU Status Network Status This address has the format xxx xxx xxx xxx where xxx stands for a number from 0 255 Users will need this number to access the Web GUI For example if the phone has IP address 192 168 40 154 please enter http 192 168 40...

Page 21: ...4 SIP accounts SIP User ID Displays the configured SIP User ID for the account SIP Server Displays the configured SIP Server address URL or IP address and port of the SIP server SIP Registration Displays SIP registration status for the SIP account it will display Yes No with Green Red background Status Network Status MAC Address Global unique ID of device in HEX format The MAC address will be used...

Page 22: ...tus GUI and Phone service status Core Dump Displays the core dump file when available and which could be downloaded for troubleshooting purpose Accounts Page Definitions Table 6 Account Page Definitions Account x General Settings Account Active Indicates whether the account is active The default setting is Yes Account Name Configures name associated with each account to be displayed on the LCD SIP...

Page 23: ... VM portal access number For example in UCM6100 IPPBX 97 could be used Account x Network Settings DNS Mode Defines which parameter will control how the Search Appliance looks up IP addresses for hostnames There are four modes A Record SRV NATPTR SRV Use Configured IP The default setting is A Record If the user wishes to locate the server by DNS SRV the user may select SRV or NATPTR SRV If Use Conf...

Page 24: ... cleared when the phone reboots The SIP Contact header will contain to notify the server to unbind the connection The default setting is No Register Expiration Specifies the time interval in minutes in which the phone refreshes its registration with the specified registrar The default value is 60 minutes The maximum value is 64800 minutes about 45 days Reregister Before Expiration Specifies the ti...

Page 25: ... 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 ...

Page 26: ...st BLF URI field fill in the URI without the domain i e BLF1006 To monitor the extensions in the list under Web GUI Settings Programmable Keys page please select Eventlist BLF in the key mode choose account enter the value of each extension in the list Auto Provision Eventlist BLFs When option is enabled empty multi purpose keys will be automatically provisioned to the monitored extensions in the ...

Page 27: ...ession timer expiration in seconds that enables SIP sessions to be periodically refreshed via a SIP request UPDATE or re INVITE If there is no refresh via an UPDATE or re INVITE message the session will be terminated once the session interval expires Session Expiration is the time in seconds where the session is considered timed out provided no successful session refresh transaction occurs beforeh...

Page 28: ... be rejected The default setting is No Authenticate Incoming INVITE If set to Yes the phone will challenge the incoming INVITE for authentication with SIP 401 Unauthorized response Default setting is No Account x Audio Settings Preferred Vocoder Multiple vocoder types are supported on the phone the vocoders in the list is a higher preference Users can configure vocoders in a preference list that i...

Page 29: ...Payload Type Specifies OPUS payload type Valid range is 96 to 127 Cannot be the same as iLBC or DTMF Payload Type DTMF Payload Type Configures the payload type for DTMF using RFC2833 Cannot be the same as iLBC or OPUS payload type Send DTMF This parameter specifies the mechanism to transmit DTMF digits There are 3 supported modes in audio which means DTMF is combined in the audio signal not very r...

Page 30: ...ple 3 1xxx 2 9 xxxxxx 2 011 x Allows any number with leading digit 1 followed by a 3 digit number followed by any number between 2 and 9 followed by any 7 digit number OR Allows any length of numbers with leading digit 2 replacing the 2 with 011 when dialed Example of a simple dial plan used in a Home Office in the US 1900x 1617 2 9 xxxxxx 1 2 9 xx 2 9 xxxxxx 011 2 9 x 3469 11 Explanation of examp...

Page 31: ...ng rule as certain text e g priority and select the custom ring tone mapped to it The custom ring tone will be used if the phone receives SIP INVITE with Alert Info header in the following format Alert Info http 127 0 0 1 info priority Selects the distinctive ring tone for the matching rule When the incoming caller ID or Alert Info matches the rule the phone will ring with the selected ring Ring T...

Page 32: ...Yes Account x Feature Codes Enable Local Call Features When enabled Do Not Disturb Call Forwarding and other call features can be used via the local feature codes on the phone Otherwise the provisioned feature codes from the server will be used User configured feature codes will be used only if server provisioned feature codes are not provided And once feature codes are configured either via serve...

Page 33: ... is from 10 to 60 Bypass Dial Plan Through Call History and Directories Enable Disable the dial plan check while dialing through the call history and any phonebook directories The default setting is No Disable Call Waiting Disables the call waiting feature The default setting is No Disable Call Waiting Tone Disables the call waiting tone when call waiting is on The default setting is No Disable Bu...

Page 34: ... means this option is disabled The default value is 300 seconds Max Unsaved Log Defines the number of unsaved logs before written to phone s flash 0 means this option is disabled The default value is 200 entries Default call log type This option is used for users to set the default call log list after select MENU CALL HISTORY Broadsoft Call Log or Local Call Log option will only show its own list ...

Page 35: ...hould be configured with known values to avoid uncomfortable high pitch sounds Syntax f1 val f2 val c on1 off1 on2 off2 on3 off3 Frequencies are in Hz and cadence on and off are in 10ms ON is the period of ringing On time in ms while OFF is the period of silence In order to set a continuous ring OFF should be zero Otherwise it will ring ON ms and a pause of OFF ms and then repeat the pattern Up to...

Page 36: ...default value is 0dB Handset TX gain Configures the transmission gain of the handset The default value is 0dB Settings LCD Display Backlight Brightness Active Configures the LCD brightness when the phone is active Valid range is 10 to 100 where 100 is the brightest Default value is 100 Backlight Brightness Idle Configures the LCD brightness when the phone is idle Valid range is 10 to 100 where 0 i...

Page 37: ...er Date Display Format Configures the date display format on the LCD The following formats are supported yyyy mm dd 2012 07 02 mm dd yyyy 07 02 2012 dd mm yyyy 02 07 2012 dddd MMMM dd Friday October 12 MMMM dd dddd October 12 Friday The default setting is yyyy mm dd Time Display Format Configures the time display in 12 hour or 24 hour format on the LCD The default setting is in 12 hour format Sett...

Page 38: ...imilar to the BLF option but in this case the PBX collects the information from the phones and sends it out in one single notify message PBX server has to support this feature Speed Dial via active account Similar to Speed Dial but it will dial based on the current active account For example if the phone is offhook and account 2 is active it will call the configured Speed Dial number using account...

Page 39: ...andstream dc com ou video ou SZ is added to narrow the LDAP search scope sn Li is the example to filter the last name Multicast Paging This option is for multicast sending Enter Line key description in Description field and multicast sending address in Value field Record This option is for Recording calls Enter Line key description in Description filed and the recorded extension number in Value fi...

Page 40: ...earch base in the Description field It could be the same or different from the Base in LDAP configuration under Advanced Settings The Base in LDAP configuration will be used if the Description field is left blank Enter the LDAP Name Number filter in the Value field For example If users set MPK 1 as LDAP Search for Account 1 and set filters Description ou video ou SZ dc grandstream dc com Value sn ...

Page 41: ...ks XSI server SIP Password Configure SIP Password for the BroadWorks XSI server Network Directories Enable Disable Broadsoft Network directories and defines the directory name The directory types are Group Directory Enable Disable and rename the BroadWorks XSI Group Directory features on the phone If keep the Name box blank the phone will use the default name Group for it Enterprise Directory Enab...

Page 42: ...ing for it Received Call Log Enable Disable and rename the BroadWorks XSI Placed Call Log features on the phone If keep the Name box blank the phone will use the default name Incoming for it Settings Outbound Notification Action URL For detailed instructions please refer to Outbound Notification Support Setup Completed Registered Unregistered Off Hook On Hook Incoming Call Outgoing Call Missed Cal...

Page 43: ...o apply the static configuration set for the IP address IPv4 Address Enter the IP address when static IP is used Subnet Mask Enter the Subnet Mask when static IP is used for IPv4 Gateway Enter the Default Gateway when static IP is used for IPv4 DNS Server 1 Enter the DNS Server 1 when static IP is used for IPv4 DNS Server 2 Enter the DNS Server 2 when static IP is used for IPv4 Preferred DNS Serve...

Page 44: ...3 QoS for SIP Defines the Layer 3 QoS parameter for SIP This value is used for IP Precedence Diff Serv or MPLS The default value is 26 Layer 3 QoS for RTP Defines the Layer 3 QoS parameter for RTP This value is used for IP Precedence Diff Serv or MPLS The default value is 46 Layer 2 QoS 802 1Q VLAN Tag Assigns the VLAN Tag of the Layer 2 QoS packets The default value is 0 Layer 2 QoS 802 1p Priori...

Page 45: ... will send credentials before being challenged by the server The default setting is No Allow DHCP Option 43 and Option 66 Override Server Default setting is Yes DHCP option 66 originally was only designed for TFTP server Later on it was extended to support an HTTP URL GXP phones support both TFTP and HTTP server via option 66 Users can also use DHCP option 43 vendor specific option to do this DHCP...

Page 46: ...s If configured only the configuration file with the matching encrypted postfix will be downloaded and flashed into the phone XML Config File Password Defines the password for encrypting the XML configuration file using OpenSSL This is required for the phone to decrypt the encrypted XML configuration file Authenticate Conf File Authenticates configuration file before acceptance Default setting is ...

Page 47: ... Memory exception ERROR level Send SIP Log Configures whether the SIP log will be included in the syslog messages The default setting is No Auto Recover From Abnormal If set to Yes the phone will automatically recover when running abnormal The default setting is Yes Maintenance Language Display Language Selects display language on the phone There are 21 languages can be set as display language use...

Page 48: ...ating the keypad is locked The default setting is Yes Note When the keypad is locked users would need press and hold the STAR key for about 4 seconds again and then enter the password to unlock it Password to Lock Unlock Configures the password to lock unlock the keypad SIP TLS Certificate SSL Certificate used for SIP Transport in TLS TCP SIP TLS Private Key SSL Private key used for SIP Transport ...

Page 49: ...ser name for the HTTP HTTPS server HTTP HTTPS Password The password for the HTTP HTTPS server Phonebook XML Server Path Configures the server path to download the phonebook XML This field could be IP address or URL with up to 256 characters Phonebook Download Interval Configures the phonebook download interval in minutes If it s set to 0 the automatic download will be disabled The default value is...

Page 50: ...obile field starting with the entered prefix telephoneNumber cn returns all the records with the telephoneNumber field starting with the entered prefix and cn field set LDAP Name Filter Configures the filter used for name lookups Examples cn sn returns all records which has the cn or sn field starting with the entered prefix sn returns all the records which do not have the sn field starting with t...

Page 51: ... a private network behind a firewall we recommend using STUN Server The following settings are useful in the STUN Server scenario STUN Server Under Settings General Settings enter a STUN Server IP or FQDN that you may have or look up a free public STUN Server on the internet and enter it on this field If using Public IP keep this field blank Use Random Ports It is under Settings General Settings T...

Page 52: ...one will go off hook and dial out the number from selected account Please see Figure 11 in the following pages for more details Additionally users could directly send the command for the phone to dial out by specifying the following URL in PC s web browser or in the field as required in other call modules http ip_address cgi bin api make_call phonenumber 1234 account 0 password admin 123 In the ab...

Page 53: ...figuration press the Save button will save but not apply the changes until the Apply button on the top of web GUI page is clicked Or users could directly press Save and Apply button We recommend rebooting or powering cycle the phone after applying all the changes Add contacts Edit contact Click to call this contact from the phone Click to dial from available lines ...

Page 54: ...rt button to start packet capture Press Stop to end capture User can press Download button to download capture file to local PC Note User can also define whether RTP packets will be captured or not from With RTP Packets option USB Filename is only required for USB and it defines the capture filename Multicast Paging GXP1760 GXP1780 GXP1782 supports multicast paging including sending and listening ...

Page 55: ...keys MPKs or virtual MPKs that associated with the monitored users Additionally the phone is also able to pick up the calls to the monitored extensions by using a pre defined feature code called BLF Call pickup Prefix For more details on Eventlist BLF configuration guide please refer to Eventlist BLF Guide Outbound Notification Support Outbound notification option can be found under device web UI ...

Page 56: ...dministration Guide Figure 5 Action URL Settings Page Table 11 Action URL Supported Events Supported Events Setup Completed Registered Unregistered Off Hook On Hook Incoming Call Outgoing Call Missed Call Established Call ...

Page 57: ...l on the phone After the user finishes setting Action URL on phone s web UI when the specific phone event occurs on the phone phone will send the Action URL to the specified SIP server The dynamic variables in the Action URL will be replaced by the actual values Here is an example Configure the following Action URL on the phone s web UI Settings Outbound Notification Action URL Incoming Call 192 1...

Page 58: ...RL Parameters P values P Value Web UI Option Value Format P8304 Setup Completed String P8305 Registered P8306 Unregistered P8308 Off Hook P8309 On Hook P8310 Incoming Call P8311 Outgoing Call P8312 Missed Call P8313 Established Call P8314 Terminated Call P8316 Open DND P8317 Close DND P8318 Open Forward P8319 Close Forward P8320 Blind Transfer P8321 Attended Transfer P8324 Hold Call P8325 UnHold C...

Page 59: ...he Firmware Server options select Self defined Firmware Server Enter the firmware server path and press the OK softkey The device may prompt for reboot to upgrade Note If not using DHCP option 66 43 please set the setting to No When upgrading starts the screen will show upgrading progress When done you will see the phone restarts again Please do not interrupt or power cycle the phone when the upgr...

Page 60: ...nload from http www solarwinds com products freetools free_tftp_server aspx http tftpd32 jounin net Instructions for local firmware upgrade via TFTP 1 Unzip the firmware files and put all of them in the root directory of the TFTP server 2 Connect the PC running the TFTP server and the phone to the same LAN segment 3 Launch the TFTP server and go to the File menu Configure Security to change the TF...

Page 61: ...the future digit numeric numbers i e P2 is associated with the New Password in the Web GUI Maintenance Web Access page Admin Password For a detailed parameter list please refer to the corresponding firmware release configuration template When the GXP1760 GXP1780 GXP1782 boots up or reboots it will issue a request to download a configuration XML file named cfgxxxxxxxxxxxx xml followed by a file nam...

Page 62: ... Grandstream is not responsible for restoring lost parameters and cannot connect your device to your VoIP service provider Please follow the instructions below to reset the phone Press MENU button to bring up the keypad configuration menu Select System and enter Select Factory Reset A warning window will pop out to make sure a reset is requested and confirmed Press the OK softkey to confirm and th...

Page 63: ... and User and Developer Forum for answers to your general questions If you have purchased our products through a Grandstream Certified Partner or Reseller please contact them directly for immediate support Our technical support staff is trained and ready to answer all of your questions Contact a technical support member or submit a trouble ticket online to receive in depth support Thank you again ...

Reviews: