Product Function: BLF

VIP-6040PT

Cost-effective, High-performance PoE VoIP Phone
To build high-performance VoIP communications at a low cost, PLANET has launched a new member of its IP Phone family, the VIP-6040PT enterprise-class 4-Line PoE IP Phone. It complies with IEEE 802.3af PoE interface for flexible deployment. The VIP-6040PT, featuring voice and data system where the earlier feature can be included in new locations, makes it simple for enterprises. It helps enterprises to save money on long-distance calls; for example, the remote workers can dial in through a Unified VoIP Communication System just like an extension call but no long distance call charge would occur. The VIP-6040PT also allows call to be transferred to anyone at any location within the voice system, which enables the enterprise to communicate more effectively and is helpful to streamline business processes.
Color Screen
The VIP-6040PT is an innovative, enterprise-level, color IP phone that enables user to use the photo caller ID function (upload photo to identify the extension user). When in the sleep mode, the photo user wants to be shown on the color screen can be had automatically, thereby making communication colorful.
High-quality HD VoIP Voice
The VIP-6040PT delivers HD voice whose both hardware and software HD functions (HD speaker and G.722. HD codec) is the next generation of voice quality for telephony audio, making the quality of voice better than that (toll quality) of the standard digital telephony and come close to that of a room conversation. HD voice is transmitted in the audio frequency range of 50 Hz to 7 kHz or higher over telephone lines, resulting in higher quality voice and clearer communication.
Standard Compliance
The VIP-6040PT supports Session Initiation Protocol 2.0 (RFC 3261) for easy integration with general voice over IP system. The VIP-6040PT is able to broadly interoperate with equipment provided by VoIP infrastructure providers, thus enabling them to provide their customers with better multi-media exchange services.
Enhanced, Full-Featured Business IP Phone
The VIP-6040PT is a full-featured enhanced business IP Phone that addresses the communication needs of the enterprises. It provides 4 voice lines and dual 10/100/1000Mbps Ethernet. Furthermore, the VIP-6040PT delivers user-friendly design containing a 480 x 320 color LCD.The VIP-6040PT supports all kinds of SIP-based phone features including 5-way conferencing, Transfer (blind/attended), Phonebook , Black list XML , LDAP phonebook, Screen Sleep, SMS / Voicemail / Message Waiting, Ring tone selection / Import / Delete, STUN, UPnP and SNMP, among others. Besides office use, the VIP-6040PT is also the ideal solution for VoIP service offered by Internet telephony service provider (ITSP).
Secure, High-quality VoIP Communication
The VIP-6040PT can effortlessly deliver secured toll voice quality by utilizing cutting-edge 802.1pq QoS (Quality of Service) and 802.1PQ VLAN tagging. Using voice and data VLAN can easily separate the data and voice, thus maintaining the best quality.
Professional Applications
The VIP-6040PT supports Busy Lamp Field (BLF) function that, via the lights on the phone, enables users to easily identify the status of other phones which are connected to the same IP PBX, such as busy, idle, ringing, etc. The connected IP PBX must also support BLF feature. The BLF function is helpful for a receptionist on the front desk to route all incoming calls smoothly.

VIP-5060PT

Cost-effective, High-performance PoE VoIP Phone
To build high-performance VoIP communications at a low cost, PLANET has launched a new member of its IP Phone family, the VIP-5060PT enterprise-class 6-Line PoE IP Phone. It complies with IEEE 802.3af PoE interface for flexible deployment. The VIP-5060PT makes it simple for the enterprise featuring voice and data system or expanding voice system to new locations. It helps the company to save money on long distance calls; for example, the remote workers can dial in through a Unified VoIP Communication System just like an extension call but no long distance call charge would occur. The VIP-5060PT also allows call to be transferred to anyone at any location within the voice system, which enables the enterprise to communicate more effectively and is helpful to streamline business processes.
High Quality HD Voice over IP
The VIP-5060PT delivers HD voice (High-Definition Voice) which is the next generation of voice quality for telephony audio, making the quality of voice better than that (toll quality) of the standard digital telephony and even close to that of a room conversation. HD voice is transmitted in the audio frequency range of 50 Hz to 7 kHz or higher over telephone lines, resulting in higher quality voice and clearer communication.
Standard Compliance
The VIP-5060PT supports Session Initiation Protocol 2.0 (RFC 3261) for easy integration with general voice over IP system. The VIP-5060PT is able to broadly interoperate with equipment provided by VoIP infrastructure providers, thus enabling them to provide their customers with better multi-media exchange services.
Enhanced, Full-Featured Business IP Phone
The VIP-5060PT is a full-featured enhanced business IP Phone that addresses the communication needs of the enterprises. It provides 6 voice lines and dual 10/100/1000Mbps Ethernet. Furthermore, the VIP-5060PT delivers user-friendly design containing a 128 X 64 LCD with white backlight, 4 Line keys and 4 soft keys. It supports 5 extension consoles with each consisting of 26 keys.The VIP-5060PT supports all kinds of SIP based phone features including Call Waiting, Auto Answer, Music on Hold, Caller ID and Call Waiting ID, 3-way Conferencing, Call Hold, Call Forwarding, Black List, DTMF Relay, In-Band, Out-of-Band (RFC 2833) and SIP INFO, among others. Besides office use, the VIP-5060PT is also the ideal solution for VoIP service offered by Internet Telephony Service Provider (ITSP).
Secure, High-Quality VoIP Communication
The VIP-5060PT can effortlessly deliver secured toll voice quality by utilizing cutting-edge 802.1p QoS (Quality of Service), 802.1Q VLAN tagging, and IP TOS (Type of Service) technology. Using voice and data VLAN can easily separate the data and voice, thus maintaining the best quality.
Professional Application
The VIP-5060PT supports Busy Lamp Field (BLF) function that, via the lights on the phone, enables users to easily identify the status of other phones which are connected to the same IP PBX, such as busy, idle, ringing, etc. The connected IP PBX must also support BLF feature. The BLF function is helpful for a receptionist on the front desk to route all incoming calls smoothly.

VIP-EXT-26

Flexibly Extend VoIP System by up to 130 Programmable Lines
PLANET VIP-EXT-26 voice line expansion module is designed to work with the enterprise IP phones, the VIP-2020PT and VIP-5060PT in enhancing the flexibility of VoIP system. The VIP-EXT-26, featuring 26 fully programmable buttons with dual-color LEDs, is controlled by the IP Phone via RJ-11 cable. These function keys support Auto Redial On/Off, Call Back/Forward, Do Not Disturb (DND), Flash, Headset, History, Hold, Join, Lock, Memo, Message Waiting Indicator (MWI), Phonebook, Pickup, Prefix and Redial. The VIP-EXT-26 creates up to 130 programmable extensions when 5 expansion modules are daisy chained with the enterprise IP phone.
Integrated with PLANET advanced enterprise IP phone, the VIP-EXT-26 is perfect for receptionists, call center agents, administrative assistants, executives and power users who need to monitor and manage a large volume of calls on a regular basis.

The VIP-EXT-26 supports Busy Lamp Field (BLF) function that, via the lights on the phone, enables users to easily identify the status of other phones which are connected to the same IP PBX, such as busy, idle, ringing, etc. The connected IP PBX must also support BLF feature. The BLF function is helpful for a receptionist on the front desk to route all incoming calls smoothly.

IPX-2500

Intuitive, Ease-of-Use IP PBX Machine Management
PLANET IPX-2500 IP PBX telephony system is SIP-based for optimizing communications among the small and medium businesses. The IPX-2500 is able to accept 500 user registrations, and easy to manage a full voice over IP system with the convenience and cost advantages.

Model
IPX-330
IPX-2100
IPX-2200
IPX-2500
Extension User
30
100
200
500
Concurrent Call
15
30
60
100
Conference Room
3
12
36
36
Room Concurrent Call
10
20
40
80
Recording/Voicemail
600 hrs (.gsm)
66 hrs (.wav)
600 hrs (.gsm)
66 hrs (.wav)
1,500 hrs (.gsm)
150 hrs (.wav)
75,000 hrs (.gsm)
7,500 hrs (.wav)
Off-net Calling Capability, Call Restriction, Call Access Control
The IPX-2500 integrates up to 8 calls via the IPX-21FO (4 FXO) and IPX-21GS (4 GSM) modules to form a feature-rich PBX system that supports seamless communications between the existing PSTN calls, analog, IP phones and SIP-based endpoints.
Replacing Old PBX Easily without New Wiring
Cost-effective, easy-to-install and simple-to-use, the IPX-2500 converts standard telephones to IP-based networks. It enables the service providers and enterprises to offer users traditional and enhanced telephony communication services via the existing broadband connection to the Internet or corporation network.With the IPX-2500, home users and companies are able to save the installation cost and extend their past investments in telephones, conferences and speakerphones. The IPX-2500 can be the bridge between traditional analog systems and IP network with an extremely affordable investment.
Distributed VoIP Network Infrastructure
For the new-generation communication age, the IPX-2500 supports IPv6 and VPN (client/server) connection to provide users with more flexible and advantageous communications products. With PLANET DDNS function, the IPX-2500 also helps users to apply and remember the login information easier. Moreover, its multiple language feature helps user to quickly and friendly manage the system. The IPX-2500 supports Lync server to which smart phone (using third-party app) and analog phone are connected via its communication with other devices of Lync server.
Standard Compliance
Compliant with the Session Initiation Protocol 2.0 (RFC 3261), the IPX-2500 is able to broadly interoperate with equipment provided by VoIP infrastructure providers, thus enabling them to provide their customers with better multi-media exchange services.
Green IP Office
Virtual fax functionality on IPX-2500 system allows faxes to be sent and received without requiring a fax machine. This useful feature will allow businesses to demonstrate their green credentials while at the same time reduce fax related costs across the enterprise. Inbound faxes can be automatically received and converted to TIF files and saved in the IPX-2500 system. It is also possible to configure the IPX-2500 system to send the TIF files to a user’s email box. Sending outbound faxes is as easy as uploading a file from the extension user web portal, thus creating a paperless or green office.
Full Security with VPN Support
The IPX-2500 VPN securely and cost-effectively connects geographically disparate offices of an organization, creating one cohesive virtual network. The IPX-2500 VPN technology is also used by ordinary Internet users to connect to proxy servers for the purpose of protecting one’s identity. It includes VPN server and client function that can support users’ full security login.

IPX-2200

Intuitive, Ease-of-Use IP PBX Machine Management
PLANET IPX-2200 IP PBX telephony system is SIP-based for optimizing communications among the small and medium businesses. The IPX-2200 is able to accept 200 user registrations, and easy to manage a full voice over IP system with the convenience and cost advantages.
Model
IPX-330
IPX-2100
IPX-2200
IPX-2500
Extension User
30
100
200
500
Concurrent Call
15
30
60
100
Conference Room
3
12
36
36
Room Concurrent Call
10
20
40
80
Recording/Voicemail
600 hrs (.gsm)
66 hrs (.wav)
600 hrs (.gsm)
66 hrs (.wav)
1,500 hrs (.gsm)
150 hrs (.wav)
75,000 hrs (.gsm)
7,500 hrs (.wav)
Off-net Calling Capability, Call Restriction, Call Access Control
The IPX-2200 integrates up to 8 calls via the IPX-21FO (4 FXO) and IPX-21GS (4 GSM) modules to form a feature-rich PBX system that supports seamless communications between the existing PSTN calls, analog, IP phones and SIP-based endpoints.
Replacing Old PBX Easily without New Wiring
Cost-effective, easy-to-install and simple-to-use, the IPX-2200 converts standard telephones to IP-based networks. It enables the service providers and enterprises to offer users traditional and enhanced telephony communication services via the existing broadband connection to the Internet or corporation network.
With the IPX-2200, home users and companies are able to save the installation cost and extend their past investments in telephones, conferences and speakerphones. The IPX-2200 can be the bridge between traditional analog systems and IP network with an extremely affordable investment.
Distributed VoIP Network Infrastructure
For the new-generation communication age, the IPX-2200 supports IPv6 and VPN (client/server) connection to provide users with more flexible and advantageous communications products. With PLANET DDNS function, the IPX-2200 also helps users to apply and remember the login information easier. The cost savings and communications benefits of IP stack are substantial. The IP stack SIP trunking eliminates the physical connection to a phone company. There are no hardware, wiring, or circuit boxes to maintain for connection to the PSTN. Reducing multiple phone lines into a single point of entry drastically reduces charges for incoming lines and the IT cost associated with the maintenance of those lines. Moreover, its multiple language feature helps user to quickly and friendly manage the system. The IPX-2200 supports Lync server to which smart phone (using third-party app) and analog phone are connected via its communication with other devices of Lync server.
Standard Compliance
Compliant with the Session Initiation Protocol 2.0 (RFC 3261), the IPX-2200 is able to broadly interoperate with equipment provided by VoIP infrastructure providers, thus enabling them to provide their customers with better multi-media exchange services.
Green IP Office
Virtual fax functionality on IPX-2200 system allows faxes to be sent and received without requiring a fax machine. This useful feature will allow businesses to demonstrate their green credentials while at the same time reduce fax related costs across the enterprise. Inbound faxes can be automatically received and converted to TIF files and saved in the IPX-2200 system. It is also possible to configure the IPX-2200 system to send the TIF files to a user’s email box. Sending outbound faxes is as easy as uploading a file from the extension user web portal, thus creating a paperless or green office.
Full Security with VPN Support
The IPX-2200 VPN securely and cost-effectively connects geographically disparate offices of an organization, creating one cohesive virtual network. The IPX-2200 VPN technology is also used by ordinary Internet users to connect to proxy servers for the purpose of protecting one’s identity. It includes VPN server and client function that can support users’ full security login.

IPX-2100

Intuitive, Ease-of-Use IP PBX Machine Management
PLANET IPX-2100 IP PBX telephony system is SIP-based for optimizing communications among the small and medium businesses. The IPX-2100 is able to accept 100 user registrations, and easy to manage a full voice over IP system with the convenience and cost advantages.

Model
IPX-330
IPX-2100
IPX-2200
IPX-2500
Extension User
30
100
200
500
Concurrent Call
15
30
60
100
Conference Room
3
12
36
36
Room Concurrent Call
10
20
40
80
Recording/Voicemail
600 hrs (.gsm)
66 hrs (.wav)
600 hrs (.gsm)
66 hrs (.wav)
1,500 hrs (.gsm)
150 hrs (.wav)
75,000 hrs (.gsm)
7,500 hrs (.wav)
Off-net Calling Capability, Call Restriction, Call Access Control
The IPX-2100 integrates up to 8 calls via the IPX-21FO (4 FXO), IPX-21SL (2 FXO + 2 FXS) and IPX-21GS (4 GSM) modules to form a feature-rich PBX system that supports seamless communications between the existing PSTN calls, analog, IP phones and SIP-based endpoints.
Replacing Old PBX Easily without New Wiring
Cost-effective, easy-to-install and simple-to-use, the IPX-2100 converts standard telephones to IP-based networks. It enables the service providers and enterprises to offer users traditional and enhanced telephony communication services via the existing broadband connection to the Internet or corporation network.
With the IPX-2100, home users and companies are able to save the installation cost and extend their past investments in telephones, conferences and speakerphones. The IPX-2100 can be the bridge between traditional analog systems and IP network with an extremely affordable investment.
Distributed VoIP Network Infrastructure
For the new-generation communication age, the IPX-2100 supports IPv6 and VPN (client/server) connection to provide users with more flexible and advantageous communications products. With PLANET DDNS function, the IPX-2100 also helps users to apply and remember the login information easier. Its multiple-language feature helps user to quickly and friendly manage the system. Moreover, the IPX-2100 supports Lync server to which smart phone (using third-party app) and analog phone are connected via its communication with other devices of Lync server.
Standard Compliance
Compliant with the Session Initiation Protocol 2.0 (RFC 3261), the IPX-2100 is able to broadly interoperate with equipment provided by VoIP infrastructure providers, thus enabling them to provide their customers with better multi-media exchange services.
Green IP Office
The Fax to Email/Email to Fax service provided by the IPX-2100 allows users to transfer and receive faxes directly to or from your email inbox as file attachments. It is an easy and confidential way of receiving, storing and forwarding important fax documents, thus creating a paperless green office.
Full Security with VPN Support
The IPX-2100 VPN securely and cost-effectively connects geographically disparate offices of an organization, creating one cohesive virtual network. The IPX-2100 VPN technology is also used by ordinary Internet users to connect to proxy servers for the purpose of protecting one’s identity. It includes VPN server and client function that can support users’ full security login.

IPX-330

Intuitive, Ease-of-Use IP PBX Machine Management
PLANET IPX-330 IP PBX telephony system is SIP-based for optimizing communications among small and medium businesses in daily communications. The IPX-330 is able to accept 30 user registrations, and easy to manage a full voice over IP system with the convenience and cost advantages.

Model
IPX-330
IPX-2100
IPX-2200
IPX-2500
Extension User
30
100
200
500
Concurrent Call
15
30
60
100
Conference Room
3
12
36
36
Room Concurrent Call
10
20
40
80
Recording/Voicemail
600 hrs (.gsm)
66 hrs (.wav)
600 hrs (.gsm)
66 hrs (.wav)
1,500 hrs (.gsm)
150 hrs (.wav)
75,000 hrs (.gsm)
7,500 hrs (.wav)
Off-net Calling Capability, Call Restriction, Call Access Control
The IPX-330, integrated with 2 FXO ports, is a feature-rich PBX system that supports seamless communications between existing PSTN calls, analog, IP phones and SIP-based endpoints.
Replacing Old PBX Easily without New Wiring
Cost-effective, easy-to-install and simple-to-use, the IPX-330 converts standard telephones into IP based networks.
The service providers and enterprises offer users traditional and enhanced telephony communication services via the existing broadband connection to the Internet or corporation network.
With the IPX-330, home users and companies are able to save the installation cost and extend their past investments in telephones, conferences and speakerphones. The IPX-330 can be the bridge between traditional analog systems and IP network with an extremely affordable investment.
Distributed VoIP Network Infrastructure
For the new-generation communication age, the IPX-330 supports IPv6 and VPN (client/server) connection to provide users with more flexible and advantage communication products. With PLANET DDNS function, the IPX-330 also helps users to apply and remember the login information easier. Its multiple-language feature helps user to quickly and friendly manage the system. Moreover, the IPX-330 supports Lync server to which smart phone (using third-party app) and analog phone are connected via its communication with other devices of Lync server.
Standard Compliance
Compliant with the Session Initiation Protocol 2.0 (RFC 3261), the IPX-330 is able to broadly interoperate with equipment provided by VoIP infrastructure providers, thus enabling them to provide their customers with better multi-media exchange services.
Green IP Office
The Fax to Email/Email to Fax service by the IPX-330 allows users to transfer and receive faxes directly to or from your email inbox as file attachments. It is an easy and confidential way of receiving, storing and forwarding important fax documents, thus creating a paperless green office.
Full Security with VPN Support
The IPX-330 provides VPN to securely and cost-effectively connect geographically disparate offices of an organization, creating one cohesive virtual network. The VPN technology of the IPX-330 is also used by ordinary Internet users to connect to proxy servers for the purpose of protecting one’s identity. It includes VPN server and client function that can support users’ full security login.

VIP-6040PT

Cost-effective, High-performance PoE VoIP Phone
To build high-performance VoIP communications at a low cost, PLANET has launched a new member of its IP Phone family, the VIP-6040PT enterprise-class 4-Line PoE IP Phone. It complies with IEEE 802.3af PoE interface for flexible deployment. The VIP-6040PT, featuring voice and data system where the earlier feature can be included in new locations, makes it simple for enterprises. It helps enterprises to save money on long-distance calls; for example, the remote workers can dial in through a Unified VoIP Communication System just like an extension call but no long distance call charge would occur. The VIP-6040PT also allows call to be transferred to anyone at any location within the voice system, which enables the enterprise to communicate more effectively and is helpful to streamline business processes.
Color Screen
The VIP-6040PT is an innovative, enterprise-level, color IP phone that enables user to use the photo caller ID function (upload photo to identify the extension user). When in the sleep mode, the photo user wants to be shown on the color screen can be had automatically, thereby making communication colorful.
High-quality HD VoIP Voice
The VIP-6040PT delivers HD voice whose both hardware and software HD functions (HD speaker and G.722. HD codec) is the next generation of voice quality for telephony audio, making the quality of voice better than that (toll quality) of the standard digital telephony and come close to that of a room conversation. HD voice is transmitted in the audio frequency range of 50 Hz to 7 kHz or higher over telephone lines, resulting in higher quality voice and clearer communication.
Standard Compliance
The VIP-6040PT supports Session Initiation Protocol 2.0 (RFC 3261) for easy integration with general voice over IP system. The VIP-6040PT is able to broadly interoperate with equipment provided by VoIP infrastructure providers, thus enabling them to provide their customers with better multi-media exchange services.
Enhanced, Full-Featured Business IP Phone
The VIP-6040PT is a full-featured enhanced business IP Phone that addresses the communication needs of the enterprises. It provides 4 voice lines and dual 10/100/1000Mbps Ethernet. Furthermore, the VIP-6040PT delivers user-friendly design containing a 480 x 320 color LCD.The VIP-6040PT supports all kinds of SIP-based phone features including 5-way conferencing, Transfer (blind/attended), Phonebook , Black list XML , LDAP phonebook, Screen Sleep, SMS / Voicemail / Message Waiting, Ring tone selection / Import / Delete, STUN, UPnP and SNMP, among others. Besides office use, the VIP-6040PT is also the ideal solution for VoIP service offered by Internet telephony service provider (ITSP).
Secure, High-quality VoIP Communication
The VIP-6040PT can effortlessly deliver secured toll voice quality by utilizing cutting-edge 802.1pq QoS (Quality of Service) and 802.1PQ VLAN tagging. Using voice and data VLAN can easily separate the data and voice, thus maintaining the best quality.
Professional Applications
The VIP-6040PT supports Busy Lamp Field (BLF) function that, via the lights on the phone, enables users to easily identify the status of other phones which are connected to the same IP PBX, such as busy, idle, ringing, etc. The connected IP PBX must also support BLF feature. The BLF function is helpful for a receptionist on the front desk to route all incoming calls smoothly.

VIP-5060PT

Cost-effective, High-performance PoE VoIP Phone
To build high-performance VoIP communications at a low cost, PLANET has launched a new member of its IP Phone family, the VIP-5060PT enterprise-class 6-Line PoE IP Phone. It complies with IEEE 802.3af PoE interface for flexible deployment. The VIP-5060PT makes it simple for the enterprise featuring voice and data system or expanding voice system to new locations. It helps the company to save money on long distance calls; for example, the remote workers can dial in through a Unified VoIP Communication System just like an extension call but no long distance call charge would occur. The VIP-5060PT also allows call to be transferred to anyone at any location within the voice system, which enables the enterprise to communicate more effectively and is helpful to streamline business processes.
High Quality HD Voice over IP
The VIP-5060PT delivers HD voice (High-Definition Voice) which is the next generation of voice quality for telephony audio, making the quality of voice better than that (toll quality) of the standard digital telephony and even close to that of a room conversation. HD voice is transmitted in the audio frequency range of 50 Hz to 7 kHz or higher over telephone lines, resulting in higher quality voice and clearer communication.
Standard Compliance
The VIP-5060PT supports Session Initiation Protocol 2.0 (RFC 3261) for easy integration with general voice over IP system. The VIP-5060PT is able to broadly interoperate with equipment provided by VoIP infrastructure providers, thus enabling them to provide their customers with better multi-media exchange services.
Enhanced, Full-Featured Business IP Phone
The VIP-5060PT is a full-featured enhanced business IP Phone that addresses the communication needs of the enterprises. It provides 6 voice lines and dual 10/100/1000Mbps Ethernet. Furthermore, the VIP-5060PT delivers user-friendly design containing a 128 X 64 LCD with white backlight, 4 Line keys and 4 soft keys. It supports 5 extension consoles with each consisting of 26 keys.The VIP-5060PT supports all kinds of SIP based phone features including Call Waiting, Auto Answer, Music on Hold, Caller ID and Call Waiting ID, 3-way Conferencing, Call Hold, Call Forwarding, Black List, DTMF Relay, In-Band, Out-of-Band (RFC 2833) and SIP INFO, among others. Besides office use, the VIP-5060PT is also the ideal solution for VoIP service offered by Internet Telephony Service Provider (ITSP).
Secure, High-Quality VoIP Communication
The VIP-5060PT can effortlessly deliver secured toll voice quality by utilizing cutting-edge 802.1p QoS (Quality of Service), 802.1Q VLAN tagging, and IP TOS (Type of Service) technology. Using voice and data VLAN can easily separate the data and voice, thus maintaining the best quality.
Professional Application
The VIP-5060PT supports Busy Lamp Field (BLF) function that, via the lights on the phone, enables users to easily identify the status of other phones which are connected to the same IP PBX, such as busy, idle, ringing, etc. The connected IP PBX must also support BLF feature. The BLF function is helpful for a receptionist on the front desk to route all incoming calls smoothly.