The table below looks at the statistics for ISDN skills in IT jobs advertised for the City of London region. Included is a guide to the salaries offered in IT jobs that have cited ISDN over the 3 months to 20 February 2017 with a comparison to the same period over the previous 2 years.

3 months to
20 Feb 2017
Same period 2016 Same period 2015
Integrated Service Digital Network (ISDN)
London / City of London
Rank 218 248 310
Rank change year-on-year
+30 +62
Permanent jobs citing ISDN 5 13 11
As % of all permanent IT jobs located in the City of London 0.100% 0.19% 0.11%
As % of the Communications & Networking category 0.58% 1.28% 0.56%
Number of salaries quoted 2 11 11
Median salary £45,000 £55,000 £47,500
Median salary % change year-on-year
-18.18% +15.78%
UK excluding London median salary £43,000 £37,000 £40,000
% change year-on-year
+16.21% -7.50%

The following table is for comparison with the above and provides statistics for the entire Communications & Networking category in permanent jobs advertised in the City of London region.

Communications & Networking Category
City of London
Permanent IT job ads with a match in the
Communications & Networking category
866 1017 1979
As % of all permanent IT jobs located in the City of London 17.25% 15.02% 19.04%
Number of salaries quoted 806 916 1670
Median salary £52,500 £52,500 £53,500
Median salary % change year-on-year
- -1.86%
90% offered a salary of more than £26,000 £33,500 £32,500
10% offered a salary of more than £75,000 £70,000 £80,000
UK excluding London median salary £40,000 £42,500 £40,000
% change year-on-year
-5.88% +6.25%

ISDN
Jobs Demand Trend in the City of London

The demand trend of job ads across the City of London region citing ISDN as a proportion of all IT jobs with a match in the Communications & Networking category.

ISDN Jobs Demand Trend in the City of London

ISDN
Salary Trend in the City of London

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing ISDN across the City of London region.

ISDN Salary Trend in the City of London

ISDN
Salary Histogram in the City of London

This chart provides a salary histogram for IT jobs citing ISDN across the City of London region over the 3 months to 20 February 2017.

ISDN Salary Histogram in the City of London

ISDN
Top 30 Related IT Skills in the City of London

For the 6 months to 20 February 2017, IT jobs citing ISDN also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the City of London region with a requirement for ISDN.

1 11 (100.00%) Cisco
1 11 (100.00%) Cisco Certification
2 9 (81.82%) CCNA
3 7 (63.64%) Firewall
3 7 (63.64%) TCP/IP
3 7 (63.64%) ITIL
3 7 (63.64%) LAN
3 7 (63.64%) WAN
4 6 (54.55%) Broadband
4 6 (54.55%) VPN
4 6 (54.55%) Juniper
4 6 (54.55%) Wireless
4 6 (54.55%) e-Health
4 6 (54.55%) Network Design
4 6 (54.55%) DV Cleared
4 6 (54.55%) Security Cleared
4 6 (54.55%) JNCIA
4 6 (54.55%) JNCIS
4 6 (54.55%) JNCIP
4 6 (54.55%) JNCIE
4 6 (54.55%) Network Monitoring
4 6 (54.55%) Network Security
5 5 (45.45%) VoIP
6 3 (27.27%) DHCP
6 3 (27.27%) DNS
6 3 (27.27%) Telecoms
7 2 (18.18%) Law
7 2 (18.18%) CCNP
7 2 (18.18%) LDAP
7 2 (18.18%) Skype

ISDN
Top Related IT Skills in the City of London 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:

Application Platforms
1 2 (18.18%) Skype for Business
Communications & Networking
1 7 (63.64%) Firewall
1 7 (63.64%) LAN
1 7 (63.64%) TCP/IP
1 7 (63.64%) WAN
2 6 (54.55%) Broadband
2 6 (54.55%) Network Security
2 6 (54.55%) VPN
2 6 (54.55%) Wireless
3 5 (45.45%) VoIP
4 3 (27.27%) DHCP
4 3 (27.27%) DNS
5 2 (18.18%) LDAP
5 2 (18.18%) Skype
5 2 (18.18%) WebEx
6 1 (9.09%) Ethernet
6 1 (9.09%) IP Telephony
General
1 3 (27.27%) Telecoms
2 2 (18.18%) Law
Job Titles
1 8 (72.73%) Analyst
2 6 (54.55%) Cisco Analyst
2 6 (54.55%) Cisco Network Analyst
2 6 (54.55%) Network Analyst
3 2 (18.18%) Support Engineer
3 2 (18.18%) Telecoms Analyst
3 2 (18.18%) Telephony Engineer
3 2 (18.18%) Telephony Support
4 1 (9.09%) Consultant
4 1 (9.09%) Infrastructure Engineer
4 1 (9.09%) Infrastructure Support
4 1 (9.09%) Infrastructure Support Engineer
4 1 (9.09%) Telecoms Consultant
4 1 (9.09%) Voice Engineer
4 1 (9.09%) Voice Network Engineer
Libraries, Frameworks & Software Standards
1 2 (18.18%) XMPP
Miscellaneous
1 6 (54.55%) e-Health
2 2 (18.18%) Video Conferencing
Operating Systems
1 1 (9.09%) Windows
1 1 (9.09%) Windows Server
Processes & Methodologies
1 7 (63.64%) ITIL
2 6 (54.55%) Network Design
2 6 (54.55%) Network Monitoring
3 2 (18.18%) Capacity Planning
3 2 (18.18%) Trend Analysis
3 2 (18.18%) WFM
4 1 (9.09%) Continuous Improvement
4 1 (9.09%) Performance Monitoring
Qualifications
1 11 (100.00%) Cisco Certification
2 9 (81.82%) CCNA
3 6 (54.55%) DV Cleared
3 6 (54.55%) JNCIA
3 6 (54.55%) JNCIE
3 6 (54.55%) JNCIP
3 6 (54.55%) JNCIS
3 6 (54.55%) Security Cleared
4 2 (18.18%) CCNP
System Software
1 1 (9.09%) Active Directory
Systems Management
1 2 (18.18%) Cisco UCCE
2 1 (9.09%) Cisco CUCM
Vendors
1 11 (100.00%) Cisco
2 6 (54.55%) Juniper
3 2 (18.18%) IPFX
3 2 (18.18%) Verint
4 1 (9.09%) Microsoft