RFC 2833 Job Trends in England

Request for Comments: 2833 - RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
UK > England

The table below provides summary statistics and salary benchmarking for jobs advertised in England requiring RFC 2833 skills. It covers permanent job vacancies from the 6 months leading up to 17 January 2026, with comparisons to the same periods in the previous two years.

6 months to
17 Jan 2026
Same period 2025 Same period 2024
Rank 609 - -
Rank change year-on-year - - -
Permanent jobs citing RFC 2833 1 0 0
As % of all permanent jobs in England 0.002% - -
As % of the Libraries, Frameworks & Software Standards category 0.016% - -
Number of salaries quoted 1 0 0
10th Percentile - - -
25th Percentile £57,500 - -
Median annual salary (50th Percentile) £60,000 - -
75th Percentile £62,500 - -
90th Percentile - - -
UK median annual salary £60,000 - -

All Software Libraries and Frameworks
England

RFC 2833 falls under the Software Libraries and Frameworks category. For comparison with the information above, the following table provides summary statistics for all permanent job vacancies requiring technical specification, industry standards, software libraries and framework skills in England.

Permanent vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 6,299 10,365 12,570
As % of all permanent jobs advertised in England 11.74% 21.60% 23.97%
Number of salaries quoted 4,833 6,088 10,576
10th Percentile £36,250 £41,250 £40,000
25th Percentile £50,000 £50,415 £50,000
Median annual salary (50th Percentile) £65,000 £67,500 £65,000
Median % change year-on-year -3.70% +3.85% -5.34%
75th Percentile £85,000 £87,500 £85,000
90th Percentile £110,000 £110,000 £107,500
UK median annual salary £65,000 £65,000 £65,000
% change year-on-year - - -3.70%

RFC 2833
Job Vacancy Trend in England

Historical trend showing the proportion of permanent IT job postings citing RFC 2833 relative to all permanent IT jobs advertised in England.

RFC 2833 job vacancy trend in England

RFC 2833
Salary Trend in England

Salary distribution trend for jobs in England citing RFC 2833.

Salary distribution trend for jobs in England citing RFC 2833

RFC 2833
Job Locations in England

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing RFC 2833 within the England region over the 6 months to 17 January 2026. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Jobs
South East - 1 £60,000 - 3
RFC 2833
UK

RFC 2833
Co-Occurring Skills & Capabilities in England by Category

The following tables expand on the one above by listing co-occurrences grouped by category. They cover the same employment type, locality and period, with up to 20 co-occurrences shown in each category:

Cloud Services
1 1 (100.00%) GitHub
1 1 (100.00%) GitHub Actions
Communications & Networking
1 1 (100.00%) HTTP
1 1 (100.00%) RTP
1 1 (100.00%) Unified Communications
1 1 (100.00%) VoIP
1 1 (100.00%) Wireshark
Database & Business Intelligence
1 1 (100.00%) MongoDB
1 1 (100.00%) MySQL
Development Applications
1 1 (100.00%) Git
General
1 1 (100.00%) Social Skills
Job Titles
1 1 (100.00%) Developer
1 1 (100.00%) Python Developer
Libraries, Frameworks & Software Standards
1 1 (100.00%) Django
1 1 (100.00%) Flask
1 1 (100.00%) FreeSWITCH
1 1 (100.00%) Jinja
1 1 (100.00%) OAuth
1 1 (100.00%) OAuth2
1 1 (100.00%) pytest
1 1 (100.00%) REST
1 1 (100.00%) SQLAlchemy
1 1 (100.00%) WebRTC
Operating Systems
1 1 (100.00%) Linux
1 1 (100.00%) Ubuntu
Processes & Methodologies
1 1 (100.00%) AI
1 1 (100.00%) CI/CD
1 1 (100.00%) Containerisation
1 1 (100.00%) OO
1 1 (100.00%) OOP
1 1 (100.00%) Open Source
1 1 (100.00%) Sentiment Analysis
1 1 (100.00%) Speech Recognition
Programming Languages
1 1 (100.00%) C
1 1 (100.00%) C++
1 1 (100.00%) Python
Quality Assurance & Compliance
1 1 (100.00%) ISO/IEC 27001
1 1 (100.00%) PCI DSS
System Software
1 1 (100.00%) Docker
1 1 (100.00%) Kamailio
Systems Management
1 1 (100.00%) Argo
1 1 (100.00%) Kubernetes
Vendors
1 1 (100.00%) BT
1 1 (100.00%) Fortinet
1 1 (100.00%) Microsoft
1 1 (100.00%) Mitel