Period
to 26 April 2018

The following table provides summary statistics for permanent job vacancies advertised in London with a requirement for ISDN skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited ISDN over the 6 months to 26 April 2018 with a comparison to the same period in the previous 2 years.

Integrated Service Digital Network (ISDN)
England > London
6 months to
26 Apr 2018
Same period 2017 Same period 2016
Rank 793 763 793
Rank change year-on-year -30 +30 +60
Permanent jobs citing ISDN 42 49 92
As % of all permanent IT jobs advertised in London 0.060% 0.072% 0.11%
As % of the Communications & Networking category 0.42% 0.46% 0.70%
Number of salaries quoted 29 26 85
London median annual salary £57,500 £57,000 £52,500
Median salary % change year-on-year +0.88% +8.57% +10.53%
10th Percentile £27,500 £35,875 £31,250
90th Percentile £81,250 £66,250 £79,500
England median annual salary £45,000 £45,000 £42,500
% change year-on-year - +5.88% -

ISDN is in the Communications and Computer Networking category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in London with a requirement for communications or computer networking skills.

All Communications and Computer Networking Skills
London
Permanent vacancies with a requirement for communications or computer networking skills 10,024 10,738 13,192
As % of all permanent IT jobs advertised in London 14.35% 15.77% 15.71%
Number of salaries quoted 8,311 9,061 11,216
London median annual salary £55,000 £55,000 £52,500
Median salary % change year-on-year - +4.76% +5.00%
10th Percentile £31,000 £30,000 £28,750
90th Percentile £83,750 £80,500 £77,500
England median annual salary £47,000 £45,000 £45,000
% change year-on-year +4.44% - +3.45%

ISDN
Job Vacancy Trend in London

Job postings citing ISDN as a percentage of all IT jobs advertised in London.

Job vacancy trend for ISDN in London

ISDN
Salary Trend in London

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

Salary trend for ISDN in London

ISDN
Salary Histogram in London

The salary distribution of IT jobs citing ISDN in London over the 6 months to 26 April 2018.

Salary histogram for ISDN in London

ISDN
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing ISDN within the London region over the 6 months to 26 April 2018. 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
Job
Vacancies
West London - 10 £57,500 - 1
East London - 5 £24,000 -
Central London -34 3 £70,000 +26.13% 4
South London -18 1 £29,000 -45.28%
North London - 1 £65,000 -
ISDN
England

For the 6 months to 26 April 2018, IT jobs citing ISDN also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all permanent job ads across the London region with a requirement for ISDN.

1 26 (61.90%) VoIP
2 22 (52.38%) Cisco
3 21 (50.00%) Active Directory
4 18 (42.86%) Microsoft
4 18 (42.86%) Cisco CUCM
5 17 (40.48%) CCNP
5 17 (40.48%) Cisco Certification
5 17 (40.48%) Firewall
6 14 (33.33%) WAN
7 13 (30.95%) VPN
7 13 (30.95%) MPLS
8 12 (28.57%) Wi-Fi
8 12 (28.57%) IP Telephony
9 11 (26.19%) DSL
9 11 (26.19%) ITIL
9 11 (26.19%) Windows
9 11 (26.19%) Unified Communications
9 11 (26.19%) IronPort
10 10 (23.81%) Cisco PIX
10 10 (23.81%) Cisco ASA
10 10 (23.81%) Cisco Nexus
10 10 (23.81%) GPRS
10 10 (23.81%) LAN
10 10 (23.81%) SSL
10 10 (23.81%) VMware
10 10 (23.81%) IPsec
10 10 (23.81%) H.323
11 9 (21.43%) Wireless
11 9 (21.43%) SAN
11 9 (21.43%) DHCP

ISDN
Co-occurring IT Skills in 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 5 (11.90%) IIS
2 3 (7.14%) Exchange Server 2007
2 3 (7.14%) Exchange Server 2013
2 3 (7.14%) MS Exchange
2 3 (7.14%) Skype for Business
Cloud Services
1 3 (7.14%) Amazon AWS
2 2 (4.76%) Office 365
Communications & Networking
1 26 (61.90%) VoIP
2 17 (40.48%) Firewall
3 14 (33.33%) WAN
4 13 (30.95%) MPLS
4 13 (30.95%) VPN
5 12 (28.57%) IP Telephony
5 12 (28.57%) Wi-Fi
6 11 (26.19%) DSL
6 11 (26.19%) Unified Communications
7 10 (23.81%) Cisco ASA
7 10 (23.81%) Cisco Nexus
7 10 (23.81%) Cisco PIX
7 10 (23.81%) GPRS
7 10 (23.81%) H.323
7 10 (23.81%) IPsec
7 10 (23.81%) LAN
7 10 (23.81%) SSL
8 9 (21.43%) DHCP
8 9 (21.43%) DNS
8 9 (21.43%) SAN
Database & Business Intelligence
1 3 (7.14%) SQL Server
1 3 (7.14%) SQL Server 2005
1 3 (7.14%) SQL Server 2008
1 3 (7.14%) SQL Server 2012
2 2 (4.76%) OLAP
General
1 5 (11.90%) Games
1 5 (11.90%) Telecoms
2 4 (9.52%) Multimedia
3 3 (7.14%) Finance
4 2 (4.76%) Marketing
5 1 (2.38%) Advertising
Job Titles
1 10 (23.81%) Cisco Engineer
1 10 (23.81%) Network Engineer
2 9 (21.43%) 3rd Line Engineer
3 8 (19.05%) 3rd Line Network Engineer
3 8 (19.05%) Cisco Network Engineer
3 8 (19.05%) Voice Engineer
4 7 (16.67%) Senior Voice Engineer
5 6 (14.29%) Telephony Engineer
6 5 (11.90%) 2nd Line Support
7 4 (9.52%) Analyst
7 4 (9.52%) Support Analyst
8 3 (7.14%) 1st Line Support
8 3 (7.14%) 1st Line Technical Support
8 3 (7.14%) 1st/2nd Line Support
8 3 (7.14%) Consultant
8 3 (7.14%) IT Support
8 3 (7.14%) IT Support Specialist
8 3 (7.14%) Support Specialist
8 3 (7.14%) Technical Support
8 3 (7.14%) Technology Consultant
Libraries, Frameworks & Software Standards
1 8 (19.05%) LDAP
2 5 (11.90%) FreeSWITCH
3 4 (9.52%) 802.1X
4 3 (7.14%) Web Services
Miscellaneous
1 9 (21.43%) Self-Motivation
2 5 (11.90%) Analytical Skills
3 3 (7.14%) User Experience
3 3 (7.14%) Video Conferencing
4 2 (4.76%) Cyberattack
5 1 (2.38%) CCTV
5 1 (2.38%) Smartphone
Operating Systems
1 11 (26.19%) Windows
2 8 (19.05%) Linux
3 7 (16.67%) Windows Server
4 5 (11.90%) Windows Server 2008
5 4 (9.52%) Windows Server 2012
5 4 (9.52%) Windows XP
6 1 (2.38%) Mac OS X
6 1 (2.38%) Windows 8
6 1 (2.38%) Windows Server 2003
Processes & Methodologies
1 11 (26.19%) ITIL
2 5 (11.90%) Fund Management
2 5 (11.90%) Investment Management
2 5 (11.90%) Open Source
2 5 (11.90%) Project Planning
3 4 (9.52%) Presales
3 4 (9.52%) Time Management
4 3 (7.14%) Agile Software Development
4 3 (7.14%) Business Continuity
4 3 (7.14%) Configuration Management
4 3 (7.14%) CRM
4 3 (7.14%) Proactive Monitoring
4 3 (7.14%) Service Management
5 2 (4.76%) Asset Management
5 2 (4.76%) Network Design
5 2 (4.76%) Network Monitoring
5 2 (4.76%) Network Planning
5 2 (4.76%) Problem-Solving
6 1 (2.38%) Network Management
6 1 (2.38%) Performance Management
Programming Languages
1 7 (16.67%) C#
2 5 (11.90%) C
2 5 (11.90%) C++
2 5 (11.90%) SQL
3 3 (7.14%) PowerShell
Qualifications
1 17 (40.48%) CCNP
1 17 (40.48%) Cisco Certification
2 8 (19.05%) CCIE
3 7 (16.67%) CCNA
4 5 (11.90%) Degree
4 5 (11.90%) ITIL Certification
5 2 (4.76%) CCSA
5 2 (4.76%) CCSP
5 2 (4.76%) HP APS
5 2 (4.76%) MCSA
5 2 (4.76%) Microsoft Certification
Quality Assurance & Compliance
1 3 (7.14%) ISO/IEC 27001
2 1 (2.38%) SLA
System Software
1 21 (50.00%) Active Directory
2 7 (16.67%) VMware Infrastructure
3 5 (11.90%) Kamailio
4 4 (9.52%) Terminal Services
4 4 (9.52%) XenApp
5 2 (4.76%) Virtual Machines
6 1 (2.38%) VMware ESXi
6 1 (2.38%) vSphere
Systems Management
1 18 (42.86%) Cisco CUCM
2 8 (19.05%) FortiGate
3 5 (11.90%) SCCM
4 4 (9.52%) Backup Exec
5 3 (7.14%) XenMobile
6 1 (2.38%) NetBackup
6 1 (2.38%) vCenter Server
Vendors
1 22 (52.38%) Cisco
2 18 (42.86%) Microsoft
3 11 (26.19%) IronPort
4 10 (23.81%) VMware
5 6 (14.29%) CheckPoint
6 5 (11.90%) HP
7 4 (9.52%) Apple
7 4 (9.52%) Citrix
7 4 (9.52%) Veeam
8 3 (7.14%) Avaya
8 3 (7.14%) Bloomberg
8 3 (7.14%) Blue Coat
8 3 (7.14%) Google
8 3 (7.14%) NetApp
8 3 (7.14%) Riverbed
9 2 (4.76%) Juniper
9 2 (4.76%) Nokia
10 1 (2.38%) Hitachi
10 1 (2.38%) IPFX
10 1 (2.38%) Motorola