CRN: 200208426E           IMDA License: IW104038         SINGAPORE


Deploying Work-From-Home (WFH) Communications System

Employee working from home (WFH) is becoming the norm in work arrangement as opposed to working in a conventional office. Even conventional office is also undergoing massive changes with the advent of shared offices. Enabling remote extension on employee smartphone is crucial to adopting these latest business practices. All these while maintaining productivity and connectivity. Contact us to share our deployment experiences in enabling your workforce to work from home.

IP telephony solutions connect home-based workers to their offices and clients. Such way of working has been adopted by large enterprises with heavy investment in telecommunications and networks systems. With Grandstream, WFH deployment is within reach of SMEs and has proven quite affordable. Our experience of late has been IP Telephony outsell traditional key telephone system (KTS) as more users realise the better value proposition coming from IP-based telephone system. With the COVID-19 situation, WFH has now become mandatory for all companies worldwide.

You can download a more comprehensive coverage of remote solutions for WFH deployment here (PDF).

Grandstream IP Telephony System

Designed to provide a centralized in-premise solution for the communication needs of businesses, the UCM series IP PBX appliance combines enterprise-grade voice, video, data, and mobility features in an easy-to-manage solution. This IP PBX series allows businesses to unify multiple communication technologies, such as voice, video calling, video conferencing, video surveillance, data tools, mobility options and facility access management onto one common network that can be managed and/or accessed remotely. Work seamlessly with major telco operators - SingTel, Starhub, M1, MyRepublic and many more available via the internet.

We have deployed Grandstream with:
  • SingTel ISDN10/30, fixed land lines or digital voice
  • Starhub SIP Trunks
  • M1 SIP Trunks
  • MyRepublic, Hoiio, DIDLogic and Happy2Call SIP service vendors

Grandstream offer all these modules that are already built-in with no additional licenses or recurring fees required:
  • call auto-attendant or interactive voice response system
  • fax server (with fax-to-inbox)
  • call recording (voice logger for all extensions)
  • voicemail (with voicemail-to-inbox)
  • call details report
  • support free SIP softphone on Windows/iOS 
  • support free mobile app on Android/iOS
  • call center module - with supervisor listen & whisper functions
  • call forward external
  • conference rooms supporting 25 participants
and many other enterprise-level functions but priced at SME level. We have solutions for capacity of 4 to 2000 extensions.

Below is example of fully integrated telephony utilising traditional analog & ISDN lines (eg. SingTel, Starhub) with SIP trunks (eg. Starhub, M1, MyRepublic, etc) for communications across the enterprise.


Grandstream offer a full portfolio of IP phones for every need and every user.









Beward DS06M Video Doorphone (SIP or standalone)



Brief comparison between the traditional Key Telephone System and IP PBX below:
  • VOIP Service Providers and Calling Cost: Ability to easily route calls through VOIP service providers offering economical international call rates is a great savings to the company. Further savings can be achieved in inter-office calls, where applicable. If configured correctly, inter-office cross border calls via the Internet are free.
  • PBX Cost: For feature-to-feature comparison, IP PBX is by far lower cost to KTS. IP PBX generally comes with fax server, call logging, auto-attendant/IVR, conference bridge, CDR and voicemail. These are chargeable options in KTS. IP PBX is far more scalable.  Asterisk-based IP PBX is based on open-source. One can be implemented with full feature simply by installing it on any standard PC server. More info on Asterisk can be found at 
  • Phone Cost: We evaluate phone cost from two angles – supplies and actual cost of the phone. IP phone has now caught up with key phone in terms of cost. But most importantly, IP PBX using SIP protocol can work with SIP Phones from many manufacturers. Each offering wide spectrum of features and price points to meet your needs. Unlike SIP phones, KTS can only work with phone from the same manufacturer. Softphone on PC/Notebook are sold at a fraction of the physical phone. Some SIP Clients on mobile phones are even free. With IP PBX, you are no longer vendor locked-in. 
  • Phone Varieties: For KTS, the phone be it the physical hardware or the softphone are proprietary and can only be obtained from the same manufacturer. For IP PBX (in this case, we discuss only SIP standard), there are many varieties from various sources – physical phone, videophone or softphone on PC/Notebook, SIP Client App on Android/iOS and very soon we’ll see HTML5 SIP client running on browsers. These endpoints give IP PBX options that KTS could never have.
  • Productivity from Mobile Endpoint Support: With advent of SIP Clients on Android/iOS, IP PBX can easily support Bring-Your-Own-Device (BYOD) in an enterprise environment. By allowing the use of mobile devices, the extension goes with the employee. Furthermore, access to their frequently used contact numbers is only a button away from their mobile devices.
  • Technical Support and Maintenance: IP PBX and IP Phone can be remotely accessed and re-configured, making it far more convenient for technical support. Additionally, organizations with IT support can easily support IP PBX compared to proprietary KTS solutions. Web-based GUI also facilitates non-technical staff with limited privileges to access, monitor or perform self-service activities easily.
  • IP-based Surveillance system integration: Through the use of IP Cameras and IP Videophones, one can now access real-time video. Business owners find there are many uses – monitoring, guest at the entrance, view before paging/intercom, etc.
  • Wiring: IP PBX works off the common network in office while KTS needs separate wiring. The trade-off would be additional load on the data networks. In some cases, companies adopt separate networks for data and communications.
  • Power: KTS phone obtain its power directly from the phone wire whereas IP Phone would require separate AC/DC adaptor or from PoE switch. Expect higher power consumption from IP PBX solution.
  • Security: Security concerns are present for both. KTS calls could be tapped while IP-based could not avoid being snooped on. However, IP PBX present additional security concerns as hackers could also gained access to the IP PBX and possibly route calls at your expense. So added security measures are required for the peace of mind.
  • Data Bandwidth: In order to maintain the same network quality, IP PBX would require additional bandwidth to support VOIP calls, inter-office communications, remote extensions, etc. This is not necessary a drawback since all these would have incurred additional costs in other forms or in some cases, not an option at all, for KTS.
Here is a comparison of Grandstream IP-PBX against a typical KTS 


IP PBX (Grandstream)

Key Phone System

Auto Attendant & Interactive Voice Response


Grandstream comes with 5-level call handling including programmable modes – non-office hours, public holidays, etc.

Chargeable Option.



Also include voicemail-to-email. Users need not be in office to access voicemail.

Chargeable Option.

Voicemail accessible via telephone set in office.

Call Conference



Call Recording


All/Some call conversations can be programmed to be recorded or recording on-demand only.

Total recording including voicemail is limited to 50,000 minutes.

Chargeable Option.


Call Detail Records


Call history (incoming and outgoing calls) are all captured for analysis or cost allocation, if needed.

Chargeable Option.




Support SIP softphone clients (many available free and downloadable from internet). User can create extension on PC/Notebook/Mobile phone and make/receive calls from there.

Need to be IP-enabled (chargeable option). In most cases, only softphones from the same supplier can be supported.

VOIP Service


Can sign on with VOIP service provider and take advantage of the benefits associated with VOIP services

Need to be IP-enabled (chargeable option).

Future Expansion (additional Phones/Extension)

Use industry standard SIP phone from any suppliers (not necessary from Grandstream).

Additional extension can also be free using free softphones.

Must be from the same supplier.

Video Call

Included but only available with SIP Phone supporting video (with built-in camera). Some free softphone (X-Lite) support video call.

Not available.

Call forward to Mobile phone

Programmable for each extension – unconditional or “no answer”. 

Less flexible. Unconditional-only but require reset to go back to normal operation.

Savings on Wiring

Use the same LAN point. If already available at each workstation. Connect from wall faceplate to Phone and from phone to PC/Notebook.

Separate wiring from LAN.

Flexible Re-Location

Extension move with the phone. No programming required.

Re-programming may be required.


Telephone System


Panasonic Telephone Systems
NEC Telephone Systems
Grandstream IP PBX
Refurbished Phones


Door Access System

Fault Rectification 
Phone Relocation


Sales: 9630-7645
Support: 9857-3333