Planet ISDN Internet Telephony PBX System IPX-1800N Скачать руководство пользователя страница 19

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PLANET IP PBX user’s manual

Enable SNMP Service

1. Click

Enable

2. Enter

System Location

System Administrator Contact

SNMPv2 Read-only Community

with allowed network

specifications, and also those of the

Read-write

Community

3. Click

APPLY

Disable SNMP Service

Click

Disable

, and click

APPLY

3.3 STUN

Service

PLANET IP PBX has a built-in STUN client to solve NAT problems. Select

Service

STUN Service

to specify a Simple Traversal of UDP through NATs (STUN) server for NAT traversal. You can enable

or disable STUN Service at any time.

Note:

You have to restart the IP PBX Service, after changing the STUN setting.

Enable STUN Service

1. Click

Enable

Enter a fully qualified domain name or the IP address of a

STUN server.

3. Click

APPLY

4. Go

Service

IP PBX Service

, and click

RESTART

reflect the changes.

Disable STUN Service

Click

Disable

, enter the fully qualified domain name or the static

IP address of the external WAN interface and then click

APPLY

Usually this address refers to the static WAN IP address if there

is a NAT device between the IP PBX and the Internet. If the

WAN port of IP PBX directly connects to Internet or it is unused,

leave the address blank. Go to

Service

IP PBX Service

, and

click

RESTART

to reflect the changes.

Содержание ISDN Internet Telephony PBX System IPX-1800N

Страница 1: ...ISDN Internet Telephony PBX System IPX 1800N User s Manual ...

Страница 2: ... part of PLANET PLANET assumes no responsibility for any inaccuracies that may be contained in this User s Manual PLANET makes no commitment to update or keep current the information in this User s Manual and reserves the right to make improvements to this User s Manual and or to the products described in this User s Manual at any time without notice If you find information in this manual that is ...

Страница 3: ...lectrical and electronic equipment should understand the meaning of the crossed out wheeled bin symbol Do not dispose of WEEE as unsorted municipal waste and have to collect such WEEE separately Trademarks The PLANET logo is a trademark of PLANET Technology This documentation may refer to numerous hardware and software products by their trade names In most if not all cases their respective compani...

Страница 4: ...14 2 9 1 Storage Backup 14 2 9 2 SIP UA 15 2 9 3 CDR Log 15 2 9 4 System Events 15 2 9 5 Active Calls 15 2 10 FIRMWARE UPGRADE 16 2 11 SHUTDOWN 17 2 12 LOGOUT 17 3 SERVICE CONFIGURATION 18 3 1 NTP SERVICE 18 3 2 SNMP SERVICE 18 3 3 STUN SERVICE 19 3 4 TFTP SERVICE 20 3 5 DHCP SERVICE 21 3 6 IP PBX SERVICE 23 3 6 6 Service Configuration 23 3 6 7 Advance 24 4 IP PBX CONFIGURATION 26 4 1 USER CONFIGU...

Страница 5: ...TS SETTING IPX 2000 IPX 1803 AND IPX 1804 ONLY 46 5 FEATURE CONFIGURATION 47 5 1 CALL PARK 47 5 2 MEET ME CONFERENCE 47 5 3 MUSIC ON HOLD 49 5 4 VOICEMAIL 50 5 5 MEET ME PROMPTS 51 5 6 VOICEMAIL PROMPTS 52 5 7 WORKTIME 53 5 8 INTERACTIVE VOICE RESPONSE IVR 54 5 8 11 IVR Prompts Management 57 6 VOICE COMMUNICATION SAMPLES 58 6 1 VOICE COMMUNICATION VIA IP PBX SYSTEM IPX 1800N 58 6 2 VOICE COMMUNICA...

Страница 6: ...ommunications between existing PSTN calls IP phones and SIP based endpoints The IPX 1800N ISDN IP PBX system integrates telephony call processing call control voice mail and a widely PBX application programming interface into a highly scalable architecture designed to support both traditional circuit based and the Internet telephony service within a distributed enterprise communications network Wi...

Страница 7: ...Telephony interface ports ISDN BRI TE ports are to be connected to NT points from PSTN or other ISDN network side devices USB ports 1 external port with compliance to USB 1 1 2 0 Plug in a USB hard drive for voicemail backup from the internal one WAN Connect to a broadband modem or a WAN router LAN Connect to a LAN switch ...

Страница 8: ...tps 192 168 1 1 Once connected the browser will ask for accepting a certificate Click Yes to see the home page Type in the default administrator ID and password both are admin to log in for administration The administrator password can be changed in the User Management User 1 Click admin in the Login ID 2 Change the password in Password 3 Click UPDATE to change the password Note For the system sec...

Страница 9: ...te for PLANET IP PBX With correct time setup functions such as IVR work time and voicemail can present the actions at the right time Select System Time Setup to see the current setting of time zone and date System Time Zone Click a region country in the Time Zone list and click APPLY in System Timezone Setup Real Time Clock RTC Setup Click year month day hour minute and second in the correspondent...

Страница 10: ...e list and manually configure the following information IP Address Netmask Default gateway IP address Primary secondary or third DNS servers Click APPLY to submit DHCP Simply click DHCP in the Type list and click APPLY The acquired IP address netmask and default gateway information will show when revisit this page later PPPoE 1 Click PPPoE in the Type list 2 Enter a user name and its password in U...

Страница 11: ...ctive the changes 2 5 LAN Routing To enable static routing among LAN subnets enter network information and the IP address of the corresponding gateway in the IP PBX s LAN It is important to assure that the given gateway IP address sits in the IP PBX s LAN Each subnet requires an entry even multiple subnets share the same gateway unless masking does the same Examples are adding IP Route IDs net1 an...

Страница 12: ...r behind the gateway router or IP PBX It is required to apply an account and create a hostname in the account before configuration Click Enable give account information and refresh interval to activate a Dynamic DNS client The client then uses Username and Password to access its account and update the Hostname with the latest WAN IP address at DynDNS or 3322 net Service in Interval seconds periodi...

Страница 13: ...Y 2 8 Virtual Server You can configure PLANET IP PBX as a virtual server for remote users to access services such as the Web or FTP at your local site via Public IP Addresses With proper settings PLANET IP PBX can automatically redirect inbound traffic from WAN to local servers configured with private IP addresses In other words depending on the requested service TCP UDP port number the IP PBX red...

Страница 14: ...enance functions of IP PBX including Storage Backup SIP UA CDR Log System Event and Active Calls 2 9 1 Storage Backup To back up internal main storage click BACKUP and follow the instructions to insert the USB connector of an external USB drive Options include whether to keep or remove CDR and or voicemails after backup After a confirmation of the insertion backup starts a few seconds later if the...

Страница 15: ...ns a client is registered with the master box locally 2 9 3 CDR Log The CDR Call Detail Record Log shows each call record including Calling and Dialed Numbers Caller ID Destination Interface trunk if outbound in use epochs when the call was made answered and ended and which yield the total and billable durations The last column denotes the disposition of a call like answered or not 2 9 4 System Ev...

Страница 16: ...lee IVR Calls from FXO are picked up by Auto Attendant Meet me The client enters meet me Service Voicemail The client enters voicemail Party Shows extension number POTS number or SIP trunk ID that is talking to this client 2 10 Firmware Upgrade The version of the running PBX firmware could be found in System Firmware Upgrade To upgrade current firmware click Browse to locate a release file obtaine...

Страница 17: ...ecting the Rebooting After Shutdown check box and clicking YES In case the software reboot fails you can also press the hardware Reset button It is advised to shut down IP PBX system before a power off 2 12 Logout Logout button locates at the top left of the webpage Administrator can logout and go back to the login page by clicking it ...

Страница 18: ...or disable NTP service at any time Enable NTP Service 1 Click Enable 2 Select Automatic check box to use server pool at pool ntp org or enter a fully qualified domain name or the IP address of a NTP server 3 Click APPLY Disable NTP Service Click Disable and click APPLY 3 2 SNMP Service Select Service SNMP Service to specify Simple Network Management Protocol SNMP parameters for network status retr...

Страница 19: ... at any time Note You have to restart the IP PBX Service after changing the STUN setting Enable STUN Service 1 Click Enable 2 Enter a fully qualified domain name or the IP address of a STUN server 3 Click APPLY 4 Go to Service IP PBX Service and click RESTART to reflect the changes Disable STUN Service Click Disable enter the fully qualified domain name or the static IP address of the external WAN...

Страница 20: ...at the beginning Click a directory in the Directory list to change to a different folder Note The default directory is Initially you may not be able to change the directory since no folder is created under yet Add a Folder 1 Click a directory under which you want to add a new folder in the Directory list 2 Click ADD FOLDER 3 Enter a folder name in the pop up dialog box e g myfolder 4 Click OK to s...

Страница 21: ...y in the Directory list 2 Click Browse 3 Select a directory in the Find list and then a file 4 Click Open 5 Click PUT FILE to upload the file Now the uploaded file should appear in current directory and is displayed in the Download Delete File from the Above Folder list Disable TFTP Service Click Disable and then APPLY 3 5 DHCP Service Select Service DHCP Service to view the current status of the ...

Страница 22: ...ng an option code and value in Code Value and click ADD The new DHCP option will show in the OPTIONS list To delete an option choose it from the OPTIONS list and click DEL after the box 6 Click ADD at the bottom of the page to commit changes You can see the newly added DHCP POOL displayed in the DHCP POOL list Edit DHCP Range 1 Click any pool name in the DHCP POOL list to see the settings on the r...

Страница 23: ...ge since any IP PBX configuration change has to be reloaded to take effect Backup IP PBX Configuration Click BACKUP and IP PBX archives and encrypts current configuration into a time stamped backup file under tftpboot root directory To secure configuration files download them to a local host through the GET FILE function in Service TFTP Service once a while Clear PBX Settings Only check box both P...

Страница 24: ...TP remain intact after reversion so that one can restore to a specific time if a backup file had been generated then To revert the whole system back to the factory default as much as possible hold the hardware Reset button for 10 seconds Since this will wipe out almost everything generated by the user all system interfaces and services must be configured from scratch again if no appropriate backup...

Страница 25: ...s Do this only when there is such a client device in the system and other devices supporting the same Otherwise one may find the special device only got registered with this option but other clients or even SIP trunks fail due to such change Clear the box if you are not sure Max Active Users Enter a number for registration admission control to limit the maximum number of active registered clients ...

Страница 26: ... can always create virtual users to associate with public extensions For example extensions in reception break room and lab areas The User Management page allows the administrator to manage users in the IP telephony network Select User Management User and one can add edit and delete users Go to Service IP PBX Service and click RELOAD to activate changes Add a User 1 Click ADD 2 Enter settings show...

Страница 27: ...rgroup this user belongs to If there is not any appropriate usergroup to select come back later to revise this selection if no appropriate usergroup could be chosen for now Extensions Show the extensions associated with this user 4 2 User Group Configuration A usergroup is a logically grouping of users and their privileges For instance one could have couple of usergroups in an IP telephony network...

Страница 28: ...ings Field Description Group ID A unique group name containing alphabets numbers and underscore only without spaces 32 characters maximum Description Arbitrary description information Associated Trunks Select outbound SIP trunks and PSTN trunks accessible by this usergroup Note the order matters the hunting sequence in run time Group ID The default number is 0 A trunk with Group ID 0 does not form...

Страница 29: ...urrent configuration Member List Show the users associated with this usergroup If there is not any appropriate user to select come back later to select once one or more users have been created and associated with this usergroup 4 3 Device Configuration A device could be an IP phone gateway analog telephone adapter or even another IP PBX etc It has one or more extensions to be registered to the IP ...

Страница 30: ...ox in Service DHCP Service No extra settings needed if the phone uses TFTP for auto configuring 3 Click ENABLE to see Enable shows in the Auto Client Conf column Click EDIT and then DISABLE to disable the function Delete a Device 1 Select a Device ID 2 Click DEL to remove the device from the Device ID Table 4 3 1 ACC Automatic Client Configuration Settings Field Description Device A unique ID cont...

Страница 31: ...DATE 4 Click BACK to see the updated information Delete an Extension 1 Select an extension numbers 2 Click DEL to remove the extension from the Extension Number Table 4 3 2 Device Extension Configuration Settings Field Description Extension Number A unique line number composed of digits only e g 101 32 digits maximum This is the login ID on the device configuration side Associated Device Select th...

Страница 32: ...s support INVITE or UPDATE method during a connected call to save the resource of IP PBX However only SIP INFO DTMF mode phones should enable this since other DTMF modes require IP PBX being RTP relay server to support in line transfer DTMF Mode Choose preferred DTMF mode for this extension Currently supported types include RFC2833 SIP INFO and in band tone It must match configuration on the devic...

Страница 33: ...ropriate outbound prefix If the function is enabled the Line in use Call Back function will be disabled Selective Call Forward Optional Unconditional Call Forwarding according to the calling number Enters one or more calling numbers and a forwarding number and clicks E g forward only calls from 101 to a cellular number while let the rest enter the voice mail by default Selects a forwarding and cli...

Страница 34: ...imeout for ringing before a call is answered User5 Select a user that this extension associates with If there is not any appropriate users to select one can come back later once the expected user has been added Voicemail Select Enable to allocate voicemail account for the extension Voicemail PIN PIN to access voicemails This is mandatory if above voicemail option is enabled Language Preferred lang...

Страница 35: ... outbound prefix Timeout Before Forward Optional Timeout before trying next forwarding number in the list Note that if the forwarded number has personal setting of forwarding policy this timeout guards the total duration allowed before a call is connected by the personal setting As long as the call does not go through eventually it returns to the hunt list of forwardings Play Unavailable Forward P...

Страница 36: ...ven in the end of a pattern to include all numbers matched a specific prefix dot can not be used alone or at the beginning of the route patterns X Match any single digit from 0 to 9 Z Match any single digit from 1 to 9 N Match any single digit from 2 to 9 By selecting Route Management Route the administrator can add edit and delete routes in the Route Management page Go to Service IP PBX Service a...

Страница 37: ...ern with number of stripped digits equal to 1 dialing 95270001 will be stripped to be 5270001 when it actually got dialed out Prefix A sequence of digits to be prefixed to the final dialed number after stripping Using 9NXXXXXX as an example route pattern with number of stripped digits equal to 1 and prefix 1408 dialing 95270001 will be 14085270001 when it actually got dialed out A special prefix c...

Страница 38: ...k BACK to see the updated information Delete a Route Group 1 Select a Group ID 2 Click DEL to remove the route group from the Group ID Table 4 5 Routegroup Configuration Settings Field Description Group ID A unique ID containing alphabets numbers and underscore only without spaces 32 characters maximum Description Arbitrary description information Associated Routes6 Select routes belonged to this ...

Страница 39: ... and click RELOAD to activate changes Add a SIP Trunk 1 Click the Add New tab 2 Enter settings shown in 3 Table 4 6 4 Click ADD to see the newly added SIP trunk in the Trunk Identifier Edit a SIP Trunk 1 Click the Trunks tab and More to see more information 2 Edit settings shown in 3 Table 4 6 in a row 4 Click APPLY in the row to update the information Delete a SIP Trunk 1 Click the Trucks tab and...

Страница 40: ...ified domain name and UDP port of the remote SIP registrar which usually refer to the SIP server on the ITSP side same as proxy Outbound Routegroup7 Select a routegroup to associate routes with this trunk Outbound calls match included route patterns could employ this trunk to hop onto a remote SIP domain If there is not any appropriate routegroup to select initially one can come back later to revi...

Страница 41: ...een added Advanced Settings Select to see more settings shown below DTMF Mode Select a preferred DTMF mode RFC 2833 or SIP INFO for this trunk in the list This must match configuration on the server side If the user does not know the DTMF mode on the server side select Not sure from the list and SDP will automatically detect the DTMF mode is Inband or RFC2833 Try Peer to peer RTP Click NO to disab...

Страница 42: ...ET IP PBX Currently only Basic Rate Interface BRI ISDN service is supported BRI consists of two 64 kb s B channels and one 16 kb s D channel for a total of 144 kb s This basic service is intended to meet the needs of most individual users The ISDN PSTN TRUNK MANAGEMENT page allows the administrator to configure ISDN trunks Select Trunk ISDN PSTN Trunk and one can add edit and delete ISDN trunks Go...

Страница 43: ...ike 1 2 but excluding 3 6 9 11 If a four port FXO FXS module is also installed then the Trunk Ports here should be numbered from 5 to 16 instead of 1 to 12 Make sure to specify the indices of ports correctly or PBX will not start One can refer to the POTS Setting page before configuration Description Arbitrary description information Port Selection Select to search for an available port in the gro...

Страница 44: ...he original called number If prefix or stripping has been given but DID of Extension is not bynumber the result of digit manipulation is dialed in a DTMF string after the call has been answered by the DID extension as an automatic 2nd dialing Language Preferred language for system instructions heard from the trunk IVR List11 Associate an IVR menu with incoming calls to this trunk This is mandatory...

Страница 45: ...NT page allows the administrator to configure trunk terminals used by PLANET IP PBX Select Trunk Terminal Trunk and one can add edit and delete terminals Go to Service IP PBX Service and click RELOAD to activate changes Add a Terminal Trunk 1 Click the Add New tab 2 Enter settings shown in Table 4 8 3 Click ADD to see the newly added terminal trunk in the Terminal Identifier Edit a Terminal Trunk ...

Страница 46: ...ate usergroups to select initially One can come back later once the expected usergroup has been added Bandwidth Sensitive Indicate the trunk is over a bandwidth sensitive link e g across Internet Bandwidth Limitation Leaves this blank to disable or specifies a limit of bandwidth in kbps for call admission 4 9 POTS Setting IPX 2000 IPX 1803 and IPX 1804 only This page allows selection of country ba...

Страница 47: ...n with the caller If the callee does not call the given park line number to retrieve his call before timeout IP PBX will ring the original extension where the callee answered the call To configure Call Park feature select Feature Call Park 1 Enter settings shown in Table 5 1 2 Click APPLY Table 5 1 Call Park Configuration Settings Field Description Call Park Pilot Number A unique extension number ...

Страница 48: ...play in the Room Number Edit a Meet me Conference 1 Edit settings shown in a row 2 Click APPLY at the end of the row to update the information Delete a Meet me Conference 1 Select a room number 2 Click DEL to remove the conference room from the Room Number Table 5 2 Meet me Conference Configuration Settings Field Description Room Number Meeting room number e g 8000 Description Arbitrary descriptio...

Страница 49: ...arty is behind an IVR system 5 3 Music On Hold Music on hold MOH is used in several occasions for a single purpose to comfort the waiting party with music One could upload some candidate music files and pick one as the default one Select Feature Music On Hold to manage MOH files Add a MOH File 1 Enter settings shown in Table 5 3 2 Click ADD to see the newly added file in the MOH ID Edit a MOH File...

Страница 50: ...stem with a sophisticated IVR menu A call to an extension in use or no answer could be configured to enter voice mail recording procedure After leaving a message a notification e mail will be sent to the user owns the extension with or without the message in the form of an attached WAV file The Message Waiting Indicator MWI on IP phones if any will be lit For analog phones the user will hear six s...

Страница 51: ... the administrator when the space left is below it Voicemail Space Left Show the available space in Kbytes and minutes The storage inside IP PBX saves not only voice mails but also some other stuff such as CDR and logs The remained disk space is all for voice mails and it is the maximum available voice mail space SMTP Server Account Specify an account ID if the SMTP server requires authentication ...

Страница 52: ...T FILE to complete the replacement 4 To reset a prompt back to default leave the Upload box in blank and directly click PUT FILE Note that the replacement is done for the selected Language and Prompt only Currently only following prompts could be replaced Table 5 6 Replaceable Voicemail System Prompts Prompt Description Login Welcome to voice mail system please enter your mailbox Password Password...

Страница 53: ...Click the Management tab 2 Click a Group ID 3 Edit settings shown in Table 5 7 4 Click UPDATE to update the information Delete a Worktime 1 Click the Management tab 2 Select a Group ID 3 Click DEL The deleted worktime shall disappear from the Group ID Table 5 7 Worktime Configuration Settings Field Description Group ID A unique ID containing numbers only Mode Select one of the three modes 1 No wor...

Страница 54: ...tem and each of them could have a hierarchy up to three layers Select Feature IVR to add edit and delete the IVR menus You can also manage IVR prompts used by IVR menus in this page Add a new IVR Menu 1 Enter a name of an IVR menu in IVR Name and click a file in the Prompt list 2 Click ADD next to the IVR Name box to set the new IVR name in Info System will prompt to ask for confirmation whether a...

Страница 55: ...R name in the All IVR Menus list 2 Edit settings shown in Table 5 8 3 Click APPLY to update the changes Delete an IVR Menu 1 Click an IVR name in the All IVR Menus list 2 Click DEL to delete the IVR menu Table 5 8 Interactive Voice Response Configuration Settings Field Description All IVR Menus Select a preferred IVR menu name Info View the IVR menu as a tree view IVR Name Specify the name of the ...

Страница 56: ...id gsm I m sorry that is not a valid extension please try again transfer gsm Please hold while I try out that extension ss busy gsm System is busy at this moment please try again later ss noservice gsm The number you have dial is not in service please check the number and try again vm goodbye gsm Good bye vm sorry gsm I m sorry I do not understand you response Group Select a usergroup Language Sel...

Страница 57: ...r if Call To is selected in the Off Hour Actions list 5 8 11 IVR Prompts Management One can upload customized IVR prompts in Feature IVR and click IVR Prompts Management tab Add an IVR Prompt 1 Select a language from the Language list 2 Click Browse to find the expected recording in the local storage 3 Click PUT FILE to upload the file add it to the Prompt list Delete an IVR Prompt 1 Select a wav ...

Страница 58: ...our IP PBX system IPX 1800N via general settings Machine configurations on the IPX 1800N STEP 1 Please browse to the Device Æ IP Phone menu and create new device for the general configuration STEP 2 Please browse to the Device Æ Extension of IP Phone menu and press the ADD button to create the two extension accounts password 1001 123 for VIP 153PT and 2002 123 for VIP 156 for the voice calls IPX 1...

Страница 59: ... the VIP 153PT STEP 1 After creating accounts on the IP PBX system please log in VIP 153PT via web browser browse to the SIP Configuration and refer to the account settings of the IP Extension to complete the SIP parameters After these configurations be sure to click the DONE button to apply settings and browse to System Configuration menu to reboot the machine to make the settings effective ...

Страница 60: ...gs menu In the setting page please browse to the Service Domain page and insert the SIP parameters for IP PBX system Test the scenario To verify the VoIP communication you may make calls from extension side VIP 153PT 1001 to the number 2002 VIP 156 or reversely make calls from extension client VIP 156 2002 to the number 1001 VIP 153PT ...

Страница 61: ...t for the auto configuration Code please insert 151 as the DHCP server option Value http LAN IP for IPX 1800N tftpboot If you d like to enable auto config for IP extension features in IPX 1800N please be sure to setup the DHCP option code and the value information In most case insert the optional code 151 and the value http 192 168 1 1 tftpboot IPX 1800 LAN IP Address 192 168 1 1 Registration Auth...

Страница 62: ... Phone menu and create new device for the auto configuration STEP 3 Please press the Show extensions button to create the two extension accounts password 1001 123 for VIP 153PT and 1002 123 for VIP 156 for the voice calls 192 168 1 1 is the IP address of IPX 1800 LNote ...

Страница 63: ...n page and enable the IPX PBX setting features for IP PBX system After these configurations be sure to click the DONE button to apply settings and browse to System Configuration menu to reboot the machine to make the settings effective STEP 6 After enabling the Auto config feature the VIP 153PT shall be able to obtain IP address and SIP extension information from IP PBX system IPX 1800N informatio...

Страница 64: ...iguration setting STEP 8 After enabling the Auto config feature the VIP 156 shall be able to obtain IP address and SIP extension information from IP PBX system To verify the auto config results you may connect telephone set to VIP 156 press 120 to check if the IP address is obtained from IPX 1800N And 122 can be used to verify the extension number assigned by IPX 1800N Test the scenario To verify ...

Страница 65: ...o ISDN PSTN trunk page in Trunk menu and refer to the following configuration steps for more understandings Press Add new button from the left panel to add a new ISND PSTN trunk For example Trunk Group 1 Trunk ports 1 2 Port Selection Asc Not Rotating Signalling Point to multipoint ...

Страница 66: ...ue ID containing alphabets numbers and underscore only without spaces 32 characters maximum Destination number pattern a destination number pattern consisting of digits digit set and wildcard character Number of stripped digits number of leading digits to be stripped from the original dialed number when matches this route STEP 3 Please browse to Routegroup page in Route menu and select SIP route a...

Страница 67: ...PLANET IP PBX user s manual STEP 4 Please browse to Usergroup page in User menu and select outbound SIP accounts number trunks accessible by this usergroup ...

Страница 68: ...Reload button to make the settings effective IPX 1800N Usage IPX 1800N IP Ext 1001 calls to ISDN PSTN number Human operation at IPX Caller side Equipment operation Human operation at VIP Receiver Side Pick up phone 1001 1 IPX 1800N dial tone is heard Dial 9 phone number 1 Du Du is heard 2 IPX 1800N communication is going Ring back tone is heard Phone number is ringing ...

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