Loading
Traditional phone systems are expensive to maintain, inflexible to scale, and incapable of supporting modern hybrid work. Infraspine designs and deploys cloud PBX, Microsoft Teams Phone, SIP trunking, and contact centre solutions that reduce call costs by up to 60% while giving your team enterprise-grade communications on any device, anywhere. From a five-person office to a 200-seat call centre, we deliver unified communications that work from day one.
Legacy PBX systems were built for a world where every employee sat at a fixed desk with a dedicated handset and every office had its own telephone exchange. That world has fundamentally changed. Staff work from home, travel between sites, take customer calls on mobile, and collaborate across borders. A traditional phone system cannot follow them — and the hardware and line rental costs continue accumulating whether the system is being used or not.
VoIP and unified communications eliminate the physical constraints of traditional telephony. Your phone system lives in the cloud or on a local server — not in a locked comms room full of proprietary hardware. Extensions can be added in minutes rather than weeks. Remote workers get a full business phone presence on their laptop or mobile. International calling rates drop dramatically. And when you integrate voice with Microsoft Teams or a CRM platform, the productivity gains compound across every customer-facing interaction.
Businesses that switch to VoIP typically see call cost reductions of 40–60% in the first year, with additional savings from eliminating PBX hardware maintenance contracts and reducing reliance on mobile calls for internal communication. The return on investment is usually realised within six to twelve months of deployment — making VoIP one of the highest-value infrastructure investments available to a growing business.
Traditional PBX vs VoIP Comparison
From cloud PBX deployment through Microsoft Teams Phone integration to contact centre solutions and VoIP security — complete unified communications delivered and managed.
A Cloud PBX replaces your ageing on-premise phone system with a fully managed, software-defined telephone exchange hosted in the cloud or on a local appliance, depending on your requirements. We deploy and configure market-leading platforms including 3CX, Yeastar P-Series, FreePBX, and Grandstream UCM series, each chosen based on your organisation's size, call volume, and feature requirements. Every deployment is fully customised before go-live: auto-attendant greetings and menu trees are programmed to reflect your business hours and departments, IVR flows route callers to the correct team without the need for a receptionist, voicemail-to-email delivers missed call recordings directly to your inbox, and time-based routing sends calls to different destinations outside business hours. Hunt groups ensure that incoming calls ring multiple extensions simultaneously or sequentially so calls are never missed. Softphone apps for Windows, macOS, iOS, and Android mean your team can take business calls from anywhere, and physical desk phones from Yealink, Grandstream, and Snom are provisioned automatically via our configuration server. We handle number porting, vendor coordination, user training, and ongoing system maintenance so your team can focus on the business rather than the phone system.
Microsoft Teams is already the collaboration hub for millions of employees worldwide, and Teams Phone extends that platform to handle real telephone calls to and from the public telephone network — eliminating the need for a separate desk phone or phone system entirely. We configure Teams Phone through two primary delivery methods: Direct Routing, where your existing SIP trunk is connected to Teams via a certified Session Border Controller (SBC) that we deploy and manage, giving you full control over call routing and carrier choice; and Operator Connect, where a certified Microsoft operator provides PSTN calling capacity directly within the Teams admin centre, simplifying management. Both approaches allow users to make and receive calls to any telephone number directly within the Teams desktop and mobile app. We configure auto-attendants and call queues through the Teams admin centre, port your existing numbers, and integrate Teams Phone with your broader Microsoft 365 environment including SharePoint, Outlook calendar integration for presence awareness, and Power Automate for workflow-driven call handling. Hybrid PSTN configurations allow Teams Phone to coexist with an existing on-premise PBX during a phased migration, protecting your investment in existing handsets and infrastructure while the transition is completed at a pace that suits your organisation.
SIP trunking replaces the physical analog telephone lines and ISDN BRI/PRI circuits that connect your phone system to the public telephone network with a far more cost-effective and flexible IP-based alternative delivered over your existing internet connection. Instead of paying line rental for ten, twenty, or fifty physical lines that are only used for a fraction of the day, SIP trunks provide concurrent call capacity that is licensed per simultaneous call, reducing line costs by 40–70% for most organisations. We procure SIP trunking from carriers with proven quality in Pakistan and the international markets your business calls, configure your Session Border Controller for registration, authentication, codec negotiation (G.711, G.722, G.729), and DTMF handling, and connect the trunk to your existing PBX or new cloud phone system. Direct Inward Dialling (DID) numbers can be presented on any geographic local number, allowing your Pakistan business to present local numbers in Lahore, Karachi, Islamabad, or international cities where you have customers. Toll-free 0800 numbers are available for customer service lines. Failover routing automatically redirects inbound calls to mobile numbers or an alternative trunk if your primary internet connection fails, ensuring business continuity. Number porting transfers your existing landline numbers from your current carrier to the SIP platform without changing your advertised numbers.
A well-designed contact centre solution transforms customer service from a cost centre into a competitive advantage. We design and deploy inbound and outbound contact centre platforms scaled appropriately to your agent count and call volume — from a 5-seat inbound support queue through to a 200-seat blended outbound sales and service operation. Inbound ACD (Automatic Call Distribution) queues manage call flow intelligently: priority routing serves VIP customers first, skills-based routing connects callers to the agent best qualified to help them, and real-time queue dashboards give supervisors visibility into wait times, queue depth, and agent availability. Outbound dialler configurations support preview dialling where agents review contact details before the call is placed, and progressive dialling for high-volume outbound campaigns. Call recording captures every conversation for quality assurance, compliance, and training, with recordings stored securely and accessible through a web portal with role-based access control. Live monitoring allows supervisors to listen to active calls, whisper coaching provides guidance to agents without the customer hearing, and barge-in allows supervisors to join a call when needed. CRM integration with Salesforce, HubSpot, Zoho CRM, and Microsoft Dynamics creates automatic call logging, screen pops with customer history on incoming calls, and click-to-dial from within the CRM. Omnichannel queuing combines phone, email, and web chat into a unified agent workspace so customers can reach you through their preferred channel.
Modern businesses need more than audio calls — they need rich video collaboration that works reliably across meeting rooms, home offices, and mobile devices. We design and deploy complete video conferencing environments built around the platforms your team already uses or that best fit your meeting culture and budget. Zoom Rooms transforms ordinary meeting rooms into one-touch video conferencing spaces: a dedicated Zoom Rooms appliance connects to a room display, speakerphone, and camera to deliver a consistent, no-fumble meeting experience for every participant whether they are in the room or joining remotely. Microsoft Teams Rooms delivers the equivalent experience within the Teams ecosystem, supporting hybrid meetings where remote and in-room participants see each other clearly and share content without friction. Hardware selection covers every room size: huddle spaces use compact Poly Studio, Jabra PanaCast, or Logitech Rally Bar Mini systems, while large boardrooms receive PTZ cameras, ceiling-array microphones, and multi-display video bars with content sharing. Room scheduling panels from Crestron, Logitech, and Yealink show room availability at a glance and allow instant reservation from outside the room. For organisations receiving external guests, we configure virtual reception workflows where visitors are admitted from a waiting room by a host. Webinar capabilities through Zoom Webinars or Teams Live Events allow your marketing and leadership teams to host large-audience presentations with Q&A management, registration, and cloud recording for on-demand replay.
VoIP infrastructure is a high-value attack target: toll fraud through compromised extensions can accumulate international call charges of thousands of dollars overnight, while poorly secured SIP registrations are probed continuously by automated scanners. Equally, poor call quality caused by network congestion or misconfigured QoS destroys the business case for any VoIP deployment. We address both dimensions comprehensively. On the security side, all call signalling is protected using TLS (Transport Layer Security) and all media is encrypted using SRTP (Secure Real-time Transport Protocol), ensuring conversations cannot be intercepted or recorded by third parties on the network path. Session Border Controllers provide a hardened perimeter between your phone system and the internet, blocking SIP scanning, enforcing registration authentication, and applying call rate limiting to detect and stop toll fraud in real time. Vishing (voice phishing) awareness is incorporated into our user training programmes. Concurrent call limits and geographic call restrictions prevent fraudulent international calls even if credentials are compromised. On the quality side, we configure DSCP marking across your LAN and WAN so voice packets are always forwarded with strict priority over data traffic. QoS policies on your router and switches guarantee the bandwidth and latency envelope that voice requires: less than 150ms one-way delay, less than 30ms jitter, and less than 1% packet loss. Bandwidth management prevents a large file download or video stream from degrading call quality during peak hours.
VoIP Platforms & Hardware Partners
Common questions from businesses evaluating a move to VoIP and unified communications.
Cut call costs by up to 60% and give your team a phone system that works anywhere. Get your VoIP assessment from Infraspine.