Period
to 19 January 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 19 January 2018 with a comparison to the same period in the previous 2 years.

Integrated Service Digital Network (ISDN)
England > London
6 months to
19 Jan 2018
Same period 2017 Same period 2016
Rank 756 771 836
Rank change year-on-year +15 +65 -27
Permanent jobs citing ISDN 54 54 75
As % of all permanent IT jobs advertised in London 0.077% 0.076% 0.088%
As % of the Communications & Networking category 0.54% 0.49% 0.56%
Number of salaries quoted 40 44 71
London median annual salary £57,500 £52,500 £50,000
Median salary % change year-on-year +9.52% +5.00% +5.26%
10th Percentile £36,250 £32,175 £31,250
90th Percentile £65,000 £61,250 £75,000
England median annual salary £50,000 £50,000 £40,000
% change year-on-year - +25.00% -2.44%

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 9,968 11,117 13,507
As % of all permanent IT jobs advertised in London 14.18% 15.73% 15.84%
Number of salaries quoted 8,337 9,470 11,449
London median annual salary £55,000 £54,000 £50,000
Median salary % change year-on-year +1.85% +8.00% +5.26%
10th Percentile £31,250 £30,000 £27,500
90th Percentile £80,000 £80,750 £80,000
England median annual salary £45,000 £45,000 £45,000

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 19 January 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 19 January 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
Central London -4 8 £54,250 +3.33% 2
East London - 8 £62,500 -
West London - 8 £57,500 - 2
North London - 2 £61,250 - 3
ISDN
England

For the 6 months to 19 January 2018, 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 London region with a requirement for ISDN.

1 29 (53.70%) Active Directory
2 28 (51.85%) Firewall
3 23 (42.59%) Cisco
4 22 (40.74%) Windows
5 21 (38.89%) MPLS
6 20 (37.04%) SAN
7 18 (33.33%) Linux
8 17 (31.48%) Windows Server
9 16 (29.63%) Cisco CUCM
9 16 (29.63%) ITIL
9 16 (29.63%) Microsoft
9 16 (29.63%) DNS
9 16 (29.63%) VoIP
9 16 (29.63%) WAN
9 16 (29.63%) Cisco Certification
9 16 (29.63%) Wi-Fi
10 15 (27.78%) C#
10 15 (27.78%) SQL
10 15 (27.78%) IIS
10 15 (27.78%) Cisco ASA
11 14 (25.93%) Unified Communications
11 14 (25.93%) VMware
11 14 (25.93%) IP Telephony
12 13 (24.07%) LAN
12 13 (24.07%) VPN
12 13 (24.07%) Avaya
12 13 (24.07%) CheckPoint
12 13 (24.07%) Proactive Monitoring
13 12 (22.22%) DSL
14 11 (20.37%) Business Continuity

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 15 (27.78%) IIS
2 11 (20.37%) Skype for Business
3 6 (11.11%) CMS
4 5 (9.26%) MS Exchange
5 3 (5.56%) Exchange Server 2007
5 3 (5.56%) Exchange Server 2013
6 2 (3.70%) Exchange Server 2010
Cloud Services
1 7 (12.96%) Office 365
1 7 (12.96%) Slack
2 3 (5.56%) Amazon AWS
3 2 (3.70%) Microsoft Azure
Communications & Networking
1 28 (51.85%) Firewall
2 21 (38.89%) MPLS
3 20 (37.04%) SAN
4 16 (29.63%) DNS
4 16 (29.63%) VoIP
4 16 (29.63%) WAN
4 16 (29.63%) Wi-Fi
5 15 (27.78%) Cisco ASA
6 14 (25.93%) IP Telephony
6 14 (25.93%) Unified Communications
7 13 (24.07%) LAN
7 13 (24.07%) VPN
8 12 (22.22%) DSL
9 10 (18.52%) HTTPS
9 10 (18.52%) Wireless
10 8 (14.81%) Cisco Nexus
10 8 (14.81%) DHCP
10 8 (14.81%) GPRS
10 8 (14.81%) IPsec
10 8 (14.81%) SSL
Database & Business Intelligence
1 10 (18.52%) OLAP
2 3 (5.56%) SQL Server
2 3 (5.56%) SQL Server 2005
2 3 (5.56%) SQL Server 2008
2 3 (5.56%) SQL Server 2012
Development Applications
1 1 (1.85%) MSI
General
1 9 (16.67%) Finance
1 9 (16.67%) Marketing
2 3 (5.56%) Games
3 1 (1.85%) Billing
3 1 (1.85%) Telecoms
Job Titles
1 10 (18.52%) 3rd Line Engineer
1 10 (18.52%) Network Engineer
2 8 (14.81%) Consultant
2 8 (14.81%) Telephony Engineer
3 7 (12.96%) 3rd Line Network Engineer
3 7 (12.96%) Cisco Engineer
3 7 (12.96%) Cisco Network Engineer
3 7 (12.96%) Technology Consultant
4 6 (11.11%) Infrastructure Engineer
5 5 (9.26%) 2nd Line Support
6 4 (7.41%) Analyst
6 4 (7.41%) Unified Communications Specialist
7 3 (5.56%) 1st/2nd Line Support
7 3 (5.56%) Infrastructure Specialist
7 3 (5.56%) Infrastructure Support
7 3 (5.56%) IT Support
7 3 (5.56%) IT Support Specialist
7 3 (5.56%) Support Analyst
7 3 (5.56%) Support Engineer
7 3 (5.56%) Support Specialist
Libraries, Frameworks & Software Standards
1 7 (12.96%) LDAP
2 6 (11.11%) XMPP
3 5 (9.26%) FreeSWITCH
4 3 (5.56%) Web Services
Miscellaneous
1 10 (18.52%) Cyberattack
2 8 (14.81%) Data Centre
3 4 (7.41%) Analytical Skills
3 4 (7.41%) Video Conferencing
4 3 (5.56%) User Experience
5 2 (3.70%) Fat Client
5 2 (3.70%) Thin Client
6 1 (1.85%) Computer Science
6 1 (1.85%) Management Information System
6 1 (1.85%) PKI
Operating Systems
1 22 (40.74%) Windows
2 18 (33.33%) Linux
3 17 (31.48%) Windows Server
4 8 (14.81%) Windows Server 2008
5 6 (11.11%) Windows Server 2012
6 5 (9.26%) Windows Server 2003
7 3 (5.56%) Windows XP
8 2 (3.70%) Unix
9 1 (1.85%) Mac OS X
Processes & Methodologies
1 16 (29.63%) ITIL
2 13 (24.07%) Proactive Monitoring
3 11 (20.37%) Business Continuity
4 8 (14.81%) Cybersecurity
4 8 (14.81%) Network Design
5 7 (12.96%) Presales
6 6 (11.11%) Network Management
6 6 (11.11%) Project Management
7 5 (9.26%) Open Source
8 4 (7.41%) CRM
9 3 (5.56%) Agile Software Development
9 3 (5.56%) Configuration Management
9 3 (5.56%) Service Management
9 3 (5.56%) WFM
10 2 (3.70%) Asset Management
10 2 (3.70%) ITIL V3
10 2 (3.70%) Security Management
10 2 (3.70%) Server Virtualisation
11 1 (1.85%) Adaptive Security
11 1 (1.85%) Web Filtering
Programming Languages
1 15 (27.78%) C#
1 15 (27.78%) SQL
2 6 (11.11%) C
3 5 (9.26%) C++
4 3 (5.56%) PowerShell
Qualifications
1 16 (29.63%) Cisco Certification
2 9 (16.67%) CCNP
3 8 (14.81%) CCIE
4 7 (12.96%) CCNA
5 6 (11.11%) ITIL Certification
6 5 (9.26%) Degree
7 2 (3.70%) CCA
7 2 (3.70%) CCAA
7 2 (3.70%) Citrix Certification
7 2 (3.70%) MCITP
7 2 (3.70%) MCSE
7 2 (3.70%) Microsoft Certification
7 2 (3.70%) VMware Certified Professional (VCP)
8 1 (1.85%) Master's Degree
Quality Assurance & Compliance
1 11 (20.37%) ISO/IEC 27001
2 1 (1.85%) SLA
System Software
1 29 (53.70%) Active Directory
2 11 (20.37%) VMware Infrastructure
3 5 (9.26%) Kamailio
3 5 (9.26%) XenApp
4 4 (7.41%) vSphere
5 3 (5.56%) Terminal Services
6 2 (3.70%) VMware ESXi
Systems Management
1 16 (29.63%) Cisco CUCM
2 7 (12.96%) FortiGate
3 6 (11.11%) Backup Exec
3 6 (11.11%) SCCM
4 3 (5.56%) NetBackup
4 3 (5.56%) vCenter Server
4 3 (5.56%) XenMobile
5 1 (1.85%) Cisco Prime
5 1 (1.85%) SolarWinds Orion
Vendors
1 23 (42.59%) Cisco
2 16 (29.63%) Microsoft
3 14 (25.93%) VMware
4 13 (24.07%) Avaya
4 13 (24.07%) CheckPoint
5 11 (20.37%) Apple
5 11 (20.37%) NetApp
6 10 (18.52%) IronPort
7 9 (16.67%) Blue Coat
8 7 (12.96%) Meraki
8 7 (12.96%) SolarWinds
8 7 (12.96%) Sourcefire
9 5 (9.26%) Citrix
9 5 (9.26%) Veeam
10 3 (5.56%) Bloomberg
10 3 (5.56%) Google
10 3 (5.56%) Hitachi
10 3 (5.56%) HP
10 3 (5.56%) IPFX
10 3 (5.56%) Riverbed