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Check out a sample of the 12 SIP Specialist jobs posted on Upwork

Microsoft teams sip trunk integration FreePBX Hourly ‐ Posted 11 days ago

Less than 30 hrs/week
Hours needed

Less than 1 month
Duration

Intermediate
Experience Level

Hi, We have FreePBX installed and it's working fine. We want to buy and integrate Microsoft teams or skype for business as a sip trunk…

SIP Linux VoIP FreePBX Asterisk Microsoft Teams VoIP Software Session Initiation Protocol Jobs Kamailio 3CX Skype For Business Jobs
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Configure IP Phone using Draytek 2380n-plus Hourly ‐ Posted 21 days ago

Less than 30 hrs/week
Hours needed

Less than 1 month
Duration

Intermediate
Experience Level

We need to Configure Yealink IP Phone connecting to a Draytek 2380n-plus modem.

SIP VoIP VoIP Administration Network Administration JobsNetwork Security Jobs Network Equipment Session Initiation Protocol Jobs
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SIP call compression Fixed-price ‐ Posted 26 days ago

$2,000
Fixed Price

Intermediate
Experience Level

i have lots of voip device and that is connected to my tplink or mikrotik router. router have internet connection and router connected…

SIP Asterisk Session Initiation Protocol Jobs VoIP VoIP Software
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Voip specialist Fixed-price ‐ Posted 28 days ago

$250
Fixed Price

Expert
Experience Level

We are receiving phonenumber from API. After receiving we should instantly (really fast (maximum) automatically call this number. No de…

SIP VoIP VoIP Software Session Initiation Protocol Jobs Python Twilio API
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Voip Mobile Dialer Fixed-price ‐ Posted 1 month ago

$400
Fixed Price

Intermediate
Experience Level

Hi I need someone to develop a Voip Mobile Dialler that will have billing functionality

SIP FreeSWITCH VoIP VoIP Software VoIP Administration Asterisk Session Initiation Protocol Jobs Android App Development iOS
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VOIP Call Center, Auto Dialer Fixed-price ‐ Posted 19 days ago

$200
Fixed Price

Intermediate
Experience Level

Hello Freelancers, We are looking for someone to create us a VOIP call center system that can have the features below. - Auto Dialer…

SIP VoIP Asterisk VoIP Software VoIP Administration FreePBX Session Initiation Protocol Jobs Telecommunications Engineering
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Freeswitch Hourly ‐ Posted 26 days ago

Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Expert
Experience Level

We want a developer on Freeswitch who can work with us full-time or as a contract basic

SIP FreeSWITCH VoIP Kamailio VoIP Administration FreePBX Asterisk Linux System Administration Session Initiation Protocol Jobs VoIP Software Linux
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Vicidial (Asterisk) Customization Fixed-price ‐ Posted 27 days ago

$40
Fixed Price

Intermediate
Experience Level

+ You must have very good experience with Customizing Asterisk / Vicidial according to requirements + Ideally coding experience is desi…

SIP Asterisk VICIDIAL VoIP Session Initiation Protocol Jobs
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Opensips Carrier Configuration & Remote Gateway Fixed-price ‐ Posted 29 days ago

$250
Fixed Price

Expert
Experience Level

Moved away from A2 Asterisk Soft Switch to Opensips SBC, looking for assistance to configure one gateway and inbound Carrier setup And…

SIP VoIP Administration VoIP FreeSWITCH Asterisk Session Initiation Protocol Jobs VoIP Software OpenSIPS
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Voip Carrier Hourly ‐ Posted 1 month ago

Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Expert
Experience Level

Hello, please be noted that project design is attached and the following is brief description of the project concept 1. Connect Trun…

SIP VoIP Administration VoIP VoIP Software Asterisk FreePBX Linux Session Initiation Protocol Jobs PCB Design
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