The table below looks at the statistics for ISDN skills in IT jobs advertised for the London region. Included is a guide to the average salaries offered in IT jobs that have cited ISDN over the 3 months to 22 May 2015 with a comparison to the same period in the previous 2 years.

Location
3 months to
22 May 2015
Same period 2014 Same period 2013
Integrated Service Digital Network (ISDN)
Rank 595 621 597
Rank change year-on-year
+26 -24
Permanent jobs citing ISDN 18 37 24
As % of all permanent IT jobs located in London 0.041% 0.076% 0.055%
As % of the Communications & Networking category 0.25% 0.48% 0.30%
Number of salaries quoted 10 37 22
Average salary £37,500 £35,500 £38,750
Average salary % change year-on-year
+5.63% -8.38%
90% offered a salary of more than £30,000 £22,800 £27,000
10% offered a salary of more than £48,500 £57,000 £52,250
UK excluding London average salary £50,000 £36,000 £37,500
% change year-on-year
+38.88% -4.00%
ISDN
England

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

Communications & Networking Category
London
Permanent IT job ads with a match in the
Communications & Networking category
7167 7697 7982
As % of all permanent IT jobs located in London 16.50% 15.82% 18.14%
Number of salaries quoted 6052 6374 6549
Average salary £50,000 £50,000 £50,000
90% offered a salary of more than £30,000 £30,000 £31,500
10% offered a salary of more than £75,000 £70,000 £70,000
UK excluding London average salary £42,500 £40,000 £40,000
% change year-on-year
+6.25% -

ISDN
Jobs Demand Trend in London

This chart provides a 3-month moving total of permanent IT jobs citing ISDN across the London region as a proportion of the total demand within the Communications & Networking category.

ISDN Jobs Demand Trend in London

ISDN
Salary Trend in London

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

ISDN Salary Trend in London

ISDN
Salary Histogram in London

This chart provides a salary histogram for IT jobs citing ISDN across the London region over the 3 months to 22 May 2015.

ISDN Salary Histogram in London

ISDN
Job Locations in London

The table below looks at the demand and provides a guide to the average salaries quoted in IT jobs citing ISDN within the London region over the 3 months to 22 May 2015. 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
(Use links below to see detailed
statistics and historical trends)
Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Average Salary
Last 3 Months
Average Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
City of London +32 2 £52,500 +61.53%
ISDN
England

ISDN
Top 30 Related IT Skills in London

For the 6 months to 22 May 2015, IT jobs across the London region citing ISDN also mentioned the following IT skills in order of popularity. The figures indicate the number of jobs and their proportion against the total number of IT job ads sampled that cited ISDN.

1 28 (51.85%) VoIP
2 25 (46.30%) PBX
3 23 (42.59%) ITIL
3 23 (42.59%) VMware
3 23 (42.59%) VMware Infrastructure
4 21 (38.89%) Windows
4 21 (38.89%) Cisco Certification
5 20 (37.04%) TCP/IP
5 20 (37.04%) Cisco
5 20 (37.04%) CCNA
6 19 (35.19%) LAN
7 18 (33.33%) Mentoring
8 16 (29.63%) Microsoft
8 16 (29.63%) Firewall
9 15 (27.78%) Active Directory
9 15 (27.78%) DNS
9 15 (27.78%) FTP
9 15 (27.78%) WAN
9 15 (27.78%) Red Hat
9 15 (27.78%) Performance Tuning
10 14 (25.93%) Office 365
10 14 (25.93%) PaaS
10 14 (25.93%) Bash Shell
10 14 (25.93%) Confluence
10 14 (25.93%) CentOS
10 14 (25.93%) hybris
10 14 (25.93%) Puppet
10 14 (25.93%) VirtualBox
10 14 (25.93%) Unified Communications
10 14 (25.93%) Coaching

ISDN
Top Related IT Skills in London by Category

For the 6 months to 22 May 2015, IT jobs across the London region citing ISDN also mentioned the following IT skills grouped by category. The figures indicate the number of jobs and their proportion against the total number of IT job ads sampled that cited ISDN. Up to 20 skills are shown per category.

Application Platforms
1 14 (25.93%) Confluence
2 12 (22.22%) Lync
3 9 (16.67%) MS Exchange
4 2 (3.70%) Exchange Server 2010
4 2 (3.70%) Exchange Server 2007
5 1 (1.85%) CMS
5 1 (1.85%) IIS
5 1 (1.85%) Exchange Server 2013
Applications
1 13 (24.07%) MS Excel
2 1 (1.85%) MS Office
Cloud Services
1 14 (25.93%) Office 365
1 14 (25.93%) PaaS
Communications & Networking
1 28 (51.85%) VoIP
2 25 (46.30%) PBX
3 20 (37.04%) TCP/IP
4 19 (35.19%) LAN
5 16 (29.63%) Firewall
6 15 (27.78%) DNS
6 15 (27.78%) FTP
6 15 (27.78%) WAN
7 14 (25.93%) Unified Communications
7 14 (25.93%) SMTP
7 14 (25.93%) HTTP
7 14 (25.93%) HTTPS
8 11 (20.37%) Wireless
9 9 (16.67%) VLAN
10 8 (14.81%) MPLS
11 6 (11.11%) OSPF
11 6 (11.11%) VPN
11 6 (11.11%) Cisco ASA
11 6 (11.11%) IP Telephony
12 5 (9.26%) Wi-Fi
Database & Business Intelligence
1 1 (1.85%) SQL Server 2008
1 1 (1.85%) SQL Server 2005
1 1 (1.85%) SQL Server
Development Applications
1 14 (25.93%) JIRA
2 1 (1.85%) VSS/SourceSafe
General
1 14 (25.93%) Retail
2 2 (3.70%) Telecoms
2 2 (3.70%) Finance
3 1 (1.85%) Banking
Job Titles
1 14 (25.93%) Support Engineer
2 13 (24.07%) Linux Engineer
2 13 (24.07%) Systems Engineer
2 13 (24.07%) Linux Systems Engineer
3 11 (20.37%) Technical Support
4 8 (14.81%) 3rd Line Support
4 8 (14.81%) Infrastructure Engineer
4 8 (14.81%) Infrastructure Support Engineer
5 7 (12.96%) Network Engineer
6 6 (11.11%) Service Desk Engineer
7 5 (9.26%) Technical Support Engineer
7 5 (9.26%) Technical Engineer
8 4 (7.41%) Technology Consultant
8 4 (7.41%) Consultant
8 4 (7.41%) Telephony Engineer
8 4 (7.41%) Voice Engineer
9 3 (5.56%) Cisco Engineer
9 3 (5.56%) Network Support Engineer
9 3 (5.56%) Network Support
9 3 (5.56%) Cisco Network Engineer
Libraries, Frameworks & Software Standards
1 1 (1.85%) CSS
Miscellaneous
1 14 (25.93%) Wiki
2 6 (11.11%) Enterprise Software
2 6 (11.11%) User Experience
3 3 (5.56%) Mathematics
4 1 (1.85%) AVVID
4 1 (1.85%) IVR
Operating Systems
1 21 (38.89%) Windows
2 14 (25.93%) CentOS
2 14 (25.93%) Linux
2 14 (25.93%) Ubuntu
3 5 (9.26%) Windows 8
3 5 (9.26%) Windows Server 2012
4 4 (7.41%) Windows 7
5 1 (1.85%) Windows Server 2008
5 1 (1.85%) Windows Server 2003
Processes & Methodologies
1 23 (42.59%) ITIL
2 18 (33.33%) Mentoring
3 15 (27.78%) Performance Tuning
4 14 (25.93%) Coaching
4 14 (25.93%) Configuration Management
4 14 (25.93%) E-Commerce
5 4 (7.41%) Project Management
5 4 (7.41%) Change Management
5 4 (7.41%) Data Analysis
6 3 (5.56%) Migration
6 3 (5.56%) Network Design
6 3 (5.56%) Cyber Security
7 2 (3.70%) Asset Management
8 1 (1.85%) Problem Management
8 1 (1.85%) Load Balancing
8 1 (1.85%) Stakeholder Management
8 1 (1.85%) Service Delivery
8 1 (1.85%) Change Control
8 1 (1.85%) Network Architecture
8 1 (1.85%) Infrastructure Management
Programming Languages
1 14 (25.93%) Bash Shell
1 14 (25.93%) Python
2 3 (5.56%) C
Qualifications
1 21 (38.89%) Cisco Certification
2 20 (37.04%) CCNA
3 14 (25.93%) Microsoft Certification
3 14 (25.93%) CCNP
3 14 (25.93%) MCSE
4 11 (20.37%) MCSA
5 7 (12.96%) JNCIA
6 4 (7.41%) MCP
7 3 (5.56%) LPIC
7 3 (5.56%) MCTS
7 3 (5.56%) Degree
Quality Assurance & Compliance
1 5 (9.26%) SLA
System Software
1 23 (42.59%) VMware Infrastructure
2 15 (27.78%) Active Directory
3 14 (25.93%) VirtualBox
3 14 (25.93%) VMware ESX
4 1 (1.85%) Microsoft Virtual Server
4 1 (1.85%) ISA Server
4 1 (1.85%) VMware ESXi
4 1 (1.85%) Hyper-V
Systems Management
1 14 (25.93%) Puppet
1 14 (25.93%) Opscode Chef
1 14 (25.93%) Nagios
2 7 (12.96%) Cisco CUCM
3 4 (7.41%) CiscoWorks
3 4 (7.41%) SCOM
4 1 (1.85%) WSUS
Vendors
1 23 (42.59%) VMware
2 20 (37.04%) Cisco
3 16 (29.63%) Microsoft
4 15 (27.78%) Red Hat
5 14 (25.93%) hybris
5 14 (25.93%) AppDynamics
6 5 (9.26%) Avaya
6 5 (9.26%) Juniper
7 4 (7.41%) CheckPoint
7 4 (7.41%) SolarWinds
8 3 (5.56%) Mitel
9 1 (1.85%) IronPort
9 1 (1.85%) BT
9 1 (1.85%) Apple
9 1 (1.85%) Verint