Integrated Service Digital Network (ISDN)
England > South East
The table below provides summary statistics and salary benchmarking for jobs advertised in the South East requiring ISDN skills. It covers permanent job vacancies from the 6 months leading up to 11 December 2025, with comparisons to the same periods in the previous two years.
| 6 months to 11 Dec 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | - | 317 | 263 |
| Rank change year-on-year | - | -54 | +180 |
| Permanent jobs citing ISDN | 0 | 1 | 7 |
| As % of all permanent jobs in the South East | - | 0.010% | 0.095% |
| As % of the Communications & Networking category | - | 0.066% | 0.57% |
| Number of salaries quoted | 0 | 0 | 6 |
| 10th Percentile | - | - | - |
| 25th Percentile | - | - | £25,750 |
| Median annual salary (50th Percentile) | - | - | £34,500 |
| Median % change year-on-year | - | - | -77.00% |
| 75th Percentile | - | - | £43,750 |
| 90th Percentile | - | - | - |
| England median annual salary | £30,000 | £75,000 | £42,500 |
| % change year-on-year | -60.00% | +76.47% | +13.33% |
All Communications and Computer Networking Skills
South East
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 in the South East.
| Permanent vacancies with a requirement for communications or computer networking skills | 1,355 | 1,505 | 1,228 |
| As % of all permanent jobs advertised in the South East | 13.84% | 14.47% | 16.64% |
| Number of salaries quoted | 714 | 778 | 1,000 |
| 10th Percentile | £27,040 | £30,750 | £27,500 |
| 25th Percentile | £31,250 | £41,250 | £33,250 |
| Median annual salary (50th Percentile) | £45,000 | £54,750 | £50,000 |
| Median % change year-on-year | -17.81% | +9.50% | +3.90% |
| 75th Percentile | £59,500 | £63,438 | £61,250 |
| 90th Percentile | £70,000 | £75,000 | £75,000 |
| England median annual salary | £40,000 | £54,000 | £51,500 |
| % change year-on-year | -25.93% | +4.85% | -1.90% |
ISDN
Job Vacancy Trend in the South East
Historical trend showing the proportion of permanent IT job postings citing ISDN relative to all permanent IT jobs advertised in the South East.
ISDN
Salary Trend in the South East
Salary distribution trend for jobs in the South East citing ISDN.
