Period
to 17 November 2017

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 17 November 2017 with a comparison to the same period in the previous 2 years.

Integrated Service Digital Network (ISDN)
England > London
6 months to
17 Nov 2017
Same period 2016 Same period 2015
Rank 784 789 883
Rank change year-on-year +5 +94 -55
Permanent jobs citing ISDN 56 68 45
As % of all permanent IT jobs advertised in London 0.074% 0.089% 0.050%
As % of the Communications & Networking category 0.51% 0.56% 0.32%
Number of salaries quoted 48 55 42
London median annual salary £55,000 £52,500 £50,000
Median salary % change year-on-year +4.76% +5.00% +11.11%
10th Percentile £35,500 £31,500 £31,250
90th Percentile £64,125 £60,000 £61,000
England median annual salary £47,500 £45,000 £42,500
% change year-on-year +5.56% +5.88% +6.25%

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 10944 12127 14270
As % of all permanent IT jobs advertised in London 14.49% 15.94% 15.96%
Number of salaries quoted 8923 10378 12092
London median annual salary £54,500 £53,000 £50,000
Median salary % change year-on-year +2.83% +6.00% -
10th Percentile £30,000 £30,000 £27,500
90th Percentile £80,000 £80,000 £78,750
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 17 November 2017.

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 17 November 2017. 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 -2 10 £58,750 +11.90% 1
East London - 10 £61,250 -
West London - 9 £57,500 -
North London - 1 £57,500 -
ISDN
England

For the 6 months to 17 November 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 London region with a requirement for ISDN.

1 31 (55.36%) Active Directory
2 30 (53.57%) Firewall
3 26 (46.43%) Cisco
4 23 (41.07%) Windows
5 21 (37.50%) Cisco Certification
5 21 (37.50%) Windows Server
6 20 (35.71%) Unified Communications
6 20 (35.71%) Microsoft
6 20 (35.71%) MPLS
7 19 (33.93%) VoIP
7 19 (33.93%) WAN
7 19 (33.93%) Wi-Fi
8 17 (30.36%) IP Telephony
8 17 (30.36%) LAN
9 16 (28.57%) SQL
9 16 (28.57%) Cisco CUCM
9 16 (28.57%) Cisco ASA
10 15 (26.79%) Skype for Business
10 15 (26.79%) IIS
10 15 (26.79%) SAN
11 14 (25.00%) Avaya
11 14 (25.00%) DNS
12 13 (23.21%) ITIL
12 13 (23.21%) Linux
13 12 (21.43%) VPN
13 12 (21.43%) DSL
13 12 (21.43%) Wireless
13 12 (21.43%) Windows Server 2008
13 12 (21.43%) Presales
14 11 (19.64%) Data Centre

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 (26.79%) IIS
1 15 (26.79%) Skype for Business
2 11 (19.64%) MS Exchange
3 7 (12.50%) CMS
4 5 (8.93%) Exchange Server 2010
5 4 (7.14%) SharePoint
6 1 (1.79%) Exchange Server 2007
6 1 (1.79%) Exchange Server 2013
6 1 (1.79%) SharePoint Server
Applications
1 4 (7.14%) Microsoft Office
Cloud Services
1 9 (16.07%) Slack
2 6 (10.71%) Office 365
3 2 (3.57%) Microsoft Azure
4 1 (1.79%) Amazon AWS
4 1 (1.79%) PaaS
Communications & Networking
1 30 (53.57%) Firewall
2 20 (35.71%) MPLS
2 20 (35.71%) Unified Communications
3 19 (33.93%) VoIP
3 19 (33.93%) WAN
3 19 (33.93%) Wi-Fi
4 17 (30.36%) IP Telephony
4 17 (30.36%) LAN
5 16 (28.57%) Cisco ASA
6 15 (26.79%) SAN
7 14 (25.00%) DNS
8 12 (21.43%) DSL
8 12 (21.43%) VPN
8 12 (21.43%) Wireless
9 11 (19.64%) LDAP
10 9 (16.07%) Cisco Nexus
10 9 (16.07%) GPRS
10 9 (16.07%) HTTPS
10 9 (16.07%) IPsec
10 9 (16.07%) SSL
Database & Business Intelligence
1 9 (16.07%) OLAP
2 2 (3.57%) SQL Server
2 2 (3.57%) SQL Server 2008
2 2 (3.57%) SQL Server 2012
3 1 (1.79%) SQL Server 2005
Development Applications
1 1 (1.79%) MSI
General
1 8 (14.29%) Finance
1 8 (14.29%) Marketing
2 1 (1.79%) Billing
2 1 (1.79%) Legal
2 1 (1.79%) Retail
2 1 (1.79%) Telecoms
Job Titles
1 14 (25.00%) Network Engineer
2 11 (19.64%) 3rd Line Engineer
3 10 (17.86%) Consultant
4 9 (16.07%) 3rd Line Network Engineer
4 9 (16.07%) Technology Consultant
5 8 (14.29%) Cisco Engineer
5 8 (14.29%) Cisco Network Engineer
6 7 (12.50%) Infrastructure Engineer
7 6 (10.71%) Support Engineer
8 5 (8.93%) Telephony Engineer
8 5 (8.93%) Telephony Support
9 4 (7.14%) Lync Engineer
9 4 (7.14%) Unified Communications Engineer
9 4 (7.14%) Unified Communications Specialist
10 3 (5.36%) Administrator
10 3 (5.36%) Infrastructure Specialist
10 3 (5.36%) Office 365 Engineer
10 3 (5.36%) Systems Administrator
10 3 (5.36%) Unified Communications Consultant
10 3 (5.36%) VMware Engineer
Libraries, Frameworks & Software Standards
1 6 (10.71%) XMPP
2 3 (5.36%) 802.1X
3 1 (1.79%) Web Services
Miscellaneous
1 11 (19.64%) Data Centre
2 9 (16.07%) Cyber Attack
3 3 (5.36%) Video Conferencing
4 2 (3.57%) Fat Client
4 2 (3.57%) Thin Client
5 1 (1.79%) Analytical Skills
5 1 (1.79%) Computer Science
5 1 (1.79%) Digital Signage
5 1 (1.79%) Management Information System
5 1 (1.79%) Media Streaming
5 1 (1.79%) PKI
Operating Systems
1 23 (41.07%) Windows
2 21 (37.50%) Windows Server
3 13 (23.21%) Linux
4 12 (21.43%) Windows Server 2008
5 11 (19.64%) Windows Server 2012
6 5 (8.93%) Windows Server 2003
7 3 (5.36%) Windows 7
8 2 (3.57%) Unix
9 1 (1.79%) Red Hat Enterprise Linux
9 1 (1.79%) Windows XP
Processes & Methodologies
1 13 (23.21%) ITIL
2 12 (21.43%) Presales
3 11 (19.64%) Proactive Monitoring
4 10 (17.86%) Cybersecurity
4 10 (17.86%) Network Design
5 9 (16.07%) Business Continuity
6 6 (10.71%) Project Management
7 5 (8.93%) Network Management
7 5 (8.93%) Server Virtualisation
8 3 (5.36%) Change Management
8 3 (5.36%) Collaborative Working
8 3 (5.36%) Configuration Management
8 3 (5.36%) Contingency Planning
8 3 (5.36%) Customer Requirements
8 3 (5.36%) Disaster Recovery
8 3 (5.36%) Information Security
8 3 (5.36%) Trend Analysis
8 3 (5.36%) WFM
9 2 (3.57%) ITIL V3
9 2 (3.57%) Security Management
Programming Languages
1 16 (28.57%) SQL
2 9 (16.07%) C#
3 5 (8.93%) PowerShell
4 3 (5.36%) C
Qualifications
1 21 (37.50%) Cisco Certification
2 11 (19.64%) CCNA
3 10 (17.86%) CCNP
4 9 (16.07%) CCIE
5 6 (10.71%) ITIL Certification
5 6 (10.71%) MCITP
5 6 (10.71%) MCSE
5 6 (10.71%) Microsoft Certification
6 3 (5.36%) Degree
7 2 (3.57%) CCA
7 2 (3.57%) CCAA
7 2 (3.57%) Citrix Certification
7 2 (3.57%) VMware Certified Professional (VCP)
8 1 (1.79%) Master's Degree
Quality Assurance & Compliance
1 9 (16.07%) ISO/IEC 27001
2 3 (5.36%) PCI DSS
3 1 (1.79%) SLA
System Software
1 31 (55.36%) Active Directory
2 9 (16.07%) VMware Infrastructure
3 3 (5.36%) Hyper-V
3 3 (5.36%) Microsoft Virtual Server
3 3 (5.36%) Virtual Servers
3 3 (5.36%) vSphere
3 3 (5.36%) XenApp
4 2 (3.57%) VMware ESXi
5 1 (1.79%) Firmware
5 1 (1.79%) Terminal Services
5 1 (1.79%) Virtual Machines
Systems Management
1 16 (28.57%) Cisco CUCM
2 8 (14.29%) FortiGate
3 3 (5.36%) Backup Exec
3 3 (5.36%) SCCM
4 2 (3.57%) NetBackup
4 2 (3.57%) vCenter Server
5 1 (1.79%) Cisco Prime
5 1 (1.79%) SolarWinds Orion
5 1 (1.79%) WSUS
5 1 (1.79%) XenMobile
Vendors
1 26 (46.43%) Cisco
2 20 (35.71%) Microsoft
3 14 (25.00%) Avaya
4 11 (19.64%) CheckPoint
4 11 (19.64%) VMware
5 9 (16.07%) Apple
5 9 (16.07%) IronPort
5 9 (16.07%) NetApp
6 8 (14.29%) Sourcefire
7 7 (12.50%) Blue Coat
7 7 (12.50%) Meraki
7 7 (12.50%) SolarWinds
8 6 (10.71%) IPFX
9 3 (5.36%) Citrix
9 3 (5.36%) Verint
10 2 (3.57%) CommVault
10 2 (3.57%) Hitachi
10 2 (3.57%) Veeam
11 1 (1.79%) F5
11 1 (1.79%) Riverbed