Integrated Service Digital Network (ISDN)
UK
The table below provides summary statistics and salary benchmarking for jobs requiring ISDN skills. It covers permanent job vacancies from the 6 months leading up to 14 January 2026, with comparisons to the same periods in the previous two years.
| 6 months to 14 Jan 2026 |
Same period 2025 | Same period 2024 | |
|---|---|---|---|
| Rank | 651 | 689 | 702 |
| Rank change year-on-year | +38 | +13 | +275 |
| Permanent jobs citing ISDN | 2 | 10 | 19 |
| As % of all permanent jobs in the UK | 0.003% | 0.019% | 0.034% |
| As % of the Communications & Networking category | 0.021% | 0.14% | 0.24% |
| Number of salaries quoted | 1 | 10 | 11 |
| 10th Percentile | - | £69,150 | £25,750 |
| 25th Percentile | - | £72,500 | £33,500 |
| Median annual salary (50th Percentile) | £30,000 | £90,000 | £42,500 |
| Median % change year-on-year | -66.67% | +111.76% | +13.33% |
| 75th Percentile | - | £97,500 | £52,500 |
| 90th Percentile | - | - | £64,550 |
| UK excluding London median annual salary | £30,000 | - | £42,500 |
| % change year-on-year | - | - | +13.33% |
All Communications and Computer Networking Skills
UK
ISDN falls under the Communications and Computer Networking category. For comparison with the information above, the following table provides summary statistics for all permanent job vacancies requiring communications or computer networking skills.
| Permanent vacancies with a requirement for communications or computer networking skills | 9,596 | 7,151 | 7,860 |
| As % of all permanent jobs advertised in the UK | 16.00% | 13.36% | 14.12% |
| Number of salaries quoted | 3,882 | 3,712 | 6,352 |
| 10th Percentile | £25,250 | £31,250 | £26,500 |
| 25th Percentile | £28,250 | £39,625 | £34,000 |
| Median annual salary (50th Percentile) | £38,500 | £55,000 | £50,000 |
| Median % change year-on-year | -30.00% | +10.00% | -4.76% |
| 75th Percentile | £62,500 | £71,250 | £67,500 |
| 90th Percentile | £81,250 | £87,500 | £82,500 |
| UK excluding London median annual salary | £33,750 | £50,000 | £45,000 |
| % change year-on-year | -32.50% | +11.11% | - |
ISDN
Job Vacancy Trend
Historical trend showing the proportion of permanent IT job postings citing ISDN relative to all permanent IT jobs advertised.
ISDN
Salary Trend
Salary distribution trend for jobs in the UK citing ISDN.
ISDN
Top 7 Job Locations
The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing ISDN within the UK over the 6 months to 14 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 |
|---|---|---|---|---|---|
| England | +54 | 2 | £30,000 | -66.67% | 1 |
| UK excluding London | - | 2 | £30,000 | - | 2 |
| Work from Home | +60 | 1 | - | - | |
| North of England | - | 1 | £30,000 | - | 1 |
| Midlands | - | 1 | - | - | |
| North West | - | 1 | £30,000 | - | 1 |
| West Midlands | - | 1 | - | - |
ISDN
Co-Occurring Skills & Capabilities 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: