---
title: SIP.US Reviews
meta_title: 'SIP.US Reviews 2026: Details, Pricing, & Features | G2'
meta_description: Filter reviews by the users' company size, role or industry to find
  out how SIP.US works for a business like yours.
aggregate_rating:
  rating_value: 4.5
  review_count: 2
  scale: '5'
date_modified: '2026-06-14'
parent_category:
  name: Collaboration & Productivity
  url: https://www.g2.com/categories/collaboration-productivity
---


# SIP.US Reviews
**Vendor:** SIP.US  
**Category:** [VoIP Providers](https://www.g2.com/categories/voip-providers)  
**Average Rating:** 4.5/5.0  
**Total Reviews:** 2
## About SIP.US
SIP.US is a businessclass SIP trunk service provider for IPPBX systems and analog/digital telephone adapters.




## SIP.US Reviews
  ### 1. Great for Trunk & Hosting services

**Rating:** 4.0/5.0 stars

**Reviewed by:** Verified User in Telecommunications | Enterprise (> 1000 emp.)

**Reviewed Date:** August 18, 2021

**What do you like best about SIP.US?**

It provides an automated IVR service for our clients and routes inbound calls to our operators.
The most stable, responsive, and reliable we have found so far.
Ease of integration with the PBX

**What do you dislike about SIP.US?**

Bit high on pricing
having issues on international calls
some time facing glitches with pbx system
Integration with other platforms is bit challenging

**Recommendations to others considering SIP.US:**

The best thing is that the support is not tiered support. on your first call, you get connected with the highest technical level of customer support.
It Gives flexibility with the selection of PBX software. Also the way SIP.US support QoS is simply amazing.
Monitoring traffic is also one the feature that i would give a hats off

**What problems is SIP.US solving and how is that benefiting you?**

problem such as number porting, chopppy, and jitter calls are some that we are solving using SIP.us
codec mismatch issues and dealy in call are some of the problems we are overcoming while using ISP.US


## SIP.US Discussions
  - [What is SIP.US used for?](https://www.g2.com/discussions/sip-us-what-is-sip-us-used-for)
  - [What is SIP.US used for?](https://www.g2.com/discussions/what-is-sip-us-used-for)

- [View SIP.US pricing details and edition comparison](https://www.g2.com/products/sip-us/reviews?filters%5Bnps_score%5D%5B%5D=4&section=pricing&secure%5Bexpires_at%5D=2026-08-14+00%3A38%3A19+-0500&secure%5Bsession_id%5D=f422b325-e349-4649-85c0-70dbf8ba7085&secure%5Btoken%5D=c70cf16532d690f5a967e27399221e8229977b989fe1d1c7cf3af086a10d61c8&format=llm_user)

## SIP.US Features
**Additional Functionality**
- Third-Party Integrations
- To-Do List
- @mentions
- Single Sign On
- File Management
- Activity Dashboard
- Drag & Drop
- Alerts/Notifications
- Prioritization
- Access Controls/Permissions
- Screen Sharing
- Content Management
- Brainstorming
- AI Copilot
- File Transfer
- Calendar Management
- Status Tracking
- Real-Time Notifications
- Version Control
- Task Management
- Activity Tracking
- Real Time Editing
- Communication Management
- Chat/Messaging
- Tagging
- Generative AI
- Assignment Management
- Task Scheduling
- Project Management
- Collaboration Tools
- Workflow Management
- Secure Data Storage
- File Sharing
- Document Storage
- Task Progress Tracking
- Discussions/Forums
- Commenting/Notes
- Reporting & Statistics
- Contact Management
- Video Conferencing
- Progress Tracking
- Mobile Access
- API
- Document Management
- Customizable Branding

**Platform Basics - VoIP Providers**
- PBX systems, VoIP Softphone
- Call Management
- Network monitoring
- Integrations
- Virtual PBX
- SIP trunking services
- Contact Management
- Communication Management
- Fax Management
- Call List Management
- Call Center Management
- Queue Management
- Third-Party Integrations
- Computer Telephony Integration
- Real-Time Monitoring
- Call Monitoring
- Workflow Management
- Call Center Integration

**Basic Communication**
- Phone Calls
- Video Calls
- Instant Messaging
- Screen Sharing
- Conference Calls
- Desk-to-Desk Calls
- SMS Messaging
- Chat/Messaging
- Video Call Recording
- Two-Way Audio & Video
- SIP Trunking

**Agentic AI - VoIP Providers**
- Autonomous Task Execution
- Cross-system Integration
- Adaptive Learning
- Proactive Assistance

**Access**
- Software Pairing
- Browser Extension
- Individual Download

**Advanced Features**
- Hold Music
- Automated Attendants
- VOiP Number

**Additional Functionality**
- Live Chat
- Multi-Channel Communication
- Customizable Reports
- Call Tracking
- Automatic Call Distribution
- Real-Time Data
- Purchasing & Receiving
- Employee Directory
- AI Copilot
- Activity Tracking
- Collaboration Tools
- Call Scripting
- Real-Time Reporting
- Call Recording
- Real-Time Analytics
- Virtual Call Center
- Activity Dashboard
- Reporting & Statistics
- CRM
- Auto-Dialer
- Generative AI
- Contact Database
- Call Transfer
- Call Reporting
- Call Logging
- Voice Mail
- Caller ID
- Customizable Caller ID
- Mobile Access
- Callback Scheduling
- IVR
- API
- Interaction Tracking
- Call Routing
- Alerts/Notifications
- Video Conferencing
- Call Conferencing
- Call Disposition
- Predictive Dialer
- Spam Blocker
- On-Demand Recording
- Caller Profiles
- Multiple User Accounts
- VoIP Connection
- Conferencing
- Text to Speech
- Reporting/Analytics
- VoIP
- Call Queues
- Call Screening
- Access Controls/Permissions
- Online Voice Transmission
- Unified Communications
- Voicemail Transcription

## Top SIP.US Alternatives
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