The table below looks at the statistics for X.21 skills in IT jobs advertised across the UK. Included is a guide to the salaries offered in IT jobs that have cited X.21 over the 3 months to 30 September 2016 with a comparison to the same period over the previous 2 years.

3 months to
30 Sep 2016
Same period 2015 Same period 2014
X.21
Rank 911 974 981
Rank change year-on-year
+63 +7
Permanent jobs citing X.21 1 1 6
As % of all permanent IT jobs located in the UK 0.001% 0.001% 0.005%
As % of the Communications & Networking category 0.006% 0.006% 0.029%
Number of salaries quoted 0 1 6
Median salary - £39,000 £29,000
Median salary % change year-on-year
- +34.48%
UK excluding London median salary - - £29,000

The following table is for comparison with the above and provides statistics for the entire Communications & Networking category in permanent jobs advertised across the UK.

Communications & Networking Category
UK
Permanent IT job ads with a match in the
Communications & Networking category
16160 18089 20947
As % of all permanent IT jobs located in the UK 16.96% 16.58% 18.31%
Number of salaries quoted 13230 15033 16513
Median salary £45,000 £45,000 £43,750
Median salary % change year-on-year
- +2.85%
90% offered a salary of more than £28,000 £26,500 £26,500
10% offered a salary of more than £67,500 £65,000 £70,000
UK excluding London median salary £42,500 £42,000 £40,000
% change year-on-year
+1.19% +5.00%

X.21
Jobs Demand Trend

The demand trend of job ads citing X.21 as a proportion of all IT jobs with a match in the Communications & Networking category.

X.21 Jobs Demand Trend in the UK

X.21
Salary Trend

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing X.21 within the UK.

X.21 Salary Trend in the UK

X.21
Top 4 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing X.21 within the UK over the 3 months to 30 September 2016. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location
(Click see detailed
statistics and trends)
Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +58 1 - -
Reading - 1 - -
Berkshire - 1 - -
South East - 1 - -

X.21
Top 30 Related IT Skills

For the 6 months to 30 September 2016, IT jobs citing X.21 also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads with a requirement for X.21.

1 4 (100.00%) Firewall
1 4 (100.00%) Cisco
2 3 (75.00%) CCNA
2 3 (75.00%) Cisco Certification
2 3 (75.00%) xDSL
2 3 (75.00%) ITSM
2 3 (75.00%) IPsec
2 3 (75.00%) ITIL
2 3 (75.00%) WAN
2 3 (75.00%) Ethernet
2 3 (75.00%) PPP
2 3 (75.00%) SNMP
2 3 (75.00%) MPLS
2 3 (75.00%) OSPF
2 3 (75.00%) BGP
2 3 (75.00%) DSL
2 3 (75.00%) L2TP
2 3 (75.00%) Change Management
2 3 (75.00%) Network Management
3 1 (25.00%) REST
3 1 (25.00%) Performance Tuning
3 1 (25.00%) Performance Monitoring
3 1 (25.00%) EMC VNX
3 1 (25.00%) VCE vBlock
3 1 (25.00%) Disaster Recovery
3 1 (25.00%) DNS
3 1 (25.00%) NFS
3 1 (25.00%) VMS
3 1 (25.00%) SQL
3 1 (25.00%) Oracle

X.21
Top Related IT Skills by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Cloud Services
1 1 (25.00%) Amazon S3
Communications & Networking
1 4 (100.00%) Firewall
2 3 (75.00%) BGP
2 3 (75.00%) DSL
2 3 (75.00%) Ethernet
2 3 (75.00%) IPsec
2 3 (75.00%) L2TP
2 3 (75.00%) MPLS
2 3 (75.00%) OSPF
2 3 (75.00%) PPP
2 3 (75.00%) SNMP
2 3 (75.00%) WAN
2 3 (75.00%) xDSL
3 1 (25.00%) DNS
General
1 1 (25.00%) Billing
Job Titles
1 3 (75.00%) Network Engineer
1 3 (75.00%) Network Operations Engineer
1 3 (75.00%) Operations Engineer
2 1 (25.00%) Cloud Specialist
2 1 (25.00%) Storage Specialist
Libraries, Frameworks & Software Standards
1 1 (25.00%) REST
Miscellaneous
1 1 (25.00%) EMC VNX
1 1 (25.00%) Replication
1 1 (25.00%) VCE vBlock
Operating Systems
1 1 (25.00%) VMS
Processes & Methodologies
1 3 (75.00%) Change Management
1 3 (75.00%) ITIL
1 3 (75.00%) ITSM
1 3 (75.00%) Network Management
2 1 (25.00%) Disaster Recovery
2 1 (25.00%) Performance Monitoring
2 1 (25.00%) Performance Tuning
Programming Languages
1 1 (25.00%) SQL
Qualifications
1 3 (75.00%) CCNA
1 3 (75.00%) Cisco Certification
2 1 (25.00%) SC Cleared
2 1 (25.00%) Security Cleared
System Software
1 1 (25.00%) Firmware
1 1 (25.00%) NFS
1 1 (25.00%) VMware ESX
1 1 (25.00%) VMware Infrastructure
1 1 (25.00%) vSphere
Vendors
1 4 (100.00%) Cisco
2 1 (25.00%) EMC
2 1 (25.00%) Isilon
2 1 (25.00%) Oracle
2 1 (25.00%) VMware