Remote VoIP Support Specialist PBX & QoS Expert

iSupport Worldwide; Pasig; On-site; PHP 360,000 - 540,000; Full time

Benefits offered by this job

Free lunch

Onsite gym

Fitness challenges

Upskilling academy

Modern facilities

Sleep quarters

Game area

Job summary

iSupport Worldwide is seeking a competent VoIP support professional to assist customers in a remote setup. You will troubleshoot SIP-based calls, configure PBX settings, and manage Yealink IP phones while maintaining strong customer communication and ticketing workflows.

Responsibilities include diagnosing call quality issues, coordinating with senior engineers for complex problems, and documenting solutions for the knowledge base.

Qualifications

• Minimum 1 year hands-on VoIP support or technical support experience.
• Solid understanding of SIP protocol fundamentals and call routing/termination.
• Working knowledge of networking basics related to VoIP performance (IP, NAT, firewalls, QoS).
• Familiarity with E911 concepts and emergency calling configuration.

Responsibilities

• Build-out, support, and troubleshoot VoIP systems for a growing customer base.
• Configure extensions, DIDs, and call routing rules.
• Provision, configure, and troubleshoot IP phones (Yealink).
• Provide basic support for Asterisk-based PBX systems.
• Assist customers via email, phone, and ticketing system.
• Diagnose and resolve issues (registration failures, one-way/no audio, jitter/latency/packet loss).
• Document recurring issues and resolutions for knowledge base.
• Escalate complex issues to senior engineers.

Skills

VoIP support

SIP fundamentals

Networking basics

PBX knowledge

Yealink devices

English communication

Remote work

Tools

Asterisk

NetSapiens

Yeastar

PBX platforms

Wireshark

Job description

iSupport Worldwide is seeking a competent VoIP support professional to assist customers in a remote setup. You will troubleshoot SIP-based calls, configure PBX settings, and manage Yealink IP phones while maintaining strong customer communication and ticketing workflows.

Responsibilities include diagnosing call quality issues, coordinating with senior engineers for complex problems, and documenting solutions for the knowledge base.