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 26 January 2015 with a comparison to the same period in the previous 2 years.

Location
3 months to
26 Jan 2015
Same period 2014 Same period 2013
Integrated Service Digital Network (ISDN)
Rank 573 599 581
Rank change year-on-year
+26 -18
Permanent jobs citing ISDN 35 16 47
As % of all permanent IT jobs located in London 0.085% 0.037% 0.10%
As % of the Communications & Networking category 0.49% 0.24% 0.53%
Number of salaries quoted 31 7 30
Average salary £47,500 £50,000 £70,000
Average salary % change year-on-year
-5.00% -28.57%
90% offered a salary of more than £40,000 £50,000 £37,000
10% offered a salary of more than £75,000 £80,000 £80,000
UK excluding London average salary £40,000 £40,000 £33,000
% change year-on-year
- +21.21%
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
7089 6793 8809
As % of all permanent IT jobs located in London 17.16% 15.89% 19.35%
Number of salaries quoted 5997 5493 7466
Average salary £49,011 £50,000 £50,000
Average salary % change year-on-year
-1.97% -
90% offered a salary of more than £30,000 £31,000 £32,500
10% offered a salary of more than £72,500 £67,500 £72,500
UK excluding London average salary £40,000 £40,000 £40,000

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 26 January 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 26 January 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 +10 16 £47,500 -7.31%
Hounslow - 1 - -
ISDN
England

ISDN
Top 30 Related IT Skills in London

For the 6 months to 26 January 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 55 (58.51%) Cisco Certification
2 50 (53.19%) CCNP
3 49 (52.13%) Microsoft
4 46 (48.94%) WAN
5 45 (47.87%) CCNA
6 43 (45.74%) Cisco
7 40 (42.55%) Firewall
8 39 (41.49%) MPLS
8 39 (41.49%) LAN
9 36 (38.30%) Unified Communications
10 34 (36.17%) VPN
10 34 (36.17%) Wireless
11 32 (34.04%) Active Directory
11 32 (34.04%) ITIL
12 31 (32.98%) Juniper
13 30 (31.91%) VMware
14 29 (30.85%) Cisco ASA
15 28 (29.79%) Lync
15 28 (29.79%) OSPF
15 28 (29.79%) BGP
16 27 (28.72%) Microsoft Certification
16 27 (28.72%) MS Exchange
16 27 (28.72%) Cisco CUCM
17 25 (26.60%) VLAN
17 25 (26.60%) MCSE
18 24 (25.53%) MCSA
19 23 (24.47%) Ethernet
20 22 (23.40%) Internet
20 22 (23.40%) VoIP
20 22 (23.40%) VMware Infrastructure

ISDN
Top Related IT Skills in London by Category

For the 6 months to 26 January 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 28 (29.79%) Lync
2 27 (28.72%) MS Exchange
3 5 (5.32%) IIS
4 4 (4.26%) Exchange Server 2007
4 4 (4.26%) SharePoint
4 4 (4.26%) Exchange Server 2010
5 3 (3.19%) Exchange Server 2013
5 3 (3.19%) Confluence
6 2 (2.13%) nginx
6 2 (2.13%) Apache
6 2 (2.13%) SharePoint Server
Applications
1 19 (20.21%) MS Excel
2 2 (2.13%) MS Project
3 1 (1.06%) MS Office
Cloud Services
1 1 (1.06%) PaaS
1 1 (1.06%) Office 365
Communications & Networking
1 46 (48.94%) WAN
2 40 (42.55%) Firewall
3 39 (41.49%) LAN
3 39 (41.49%) MPLS
4 36 (38.30%) Unified Communications
5 34 (36.17%) Wireless
5 34 (36.17%) VPN
6 29 (30.85%) Cisco ASA
7 28 (29.79%) OSPF
7 28 (29.79%) BGP
8 25 (26.60%) VLAN
9 23 (24.47%) Ethernet
10 22 (23.40%) VoIP
10 22 (23.40%) Internet
11 20 (21.28%) Multicast
12 13 (13.83%) ADSL
13 12 (12.77%) PBX
13 12 (12.77%) TCP/IP
14 10 (10.64%) HSRP
14 10 (10.64%) GLBP
Database & Business Intelligence
1 5 (5.32%) SQL Server
2 3 (3.19%) MySQL
3 2 (2.13%) MongoDB
3 2 (2.13%) SQL Server 2012
4 1 (1.06%) PostgreSQL
4 1 (1.06%) SQL Server 2005
4 1 (1.06%) SQL Server 2008
Development Applications
1 2 (2.13%) Jenkins
2 1 (1.06%) Xcode
2 1 (1.06%) JIRA
2 1 (1.06%) Git (software)
General
1 21 (22.34%) Telecoms
2 10 (10.64%) Billing
3 9 (9.57%) Finance
4 6 (6.38%) Mandarin Language
4 6 (6.38%) French Language
4 6 (6.38%) German Language
4 6 (6.38%) Italian Language
4 6 (6.38%) Japanese Language
4 6 (6.38%) Spanish Language
5 2 (2.13%) Banking
6 1 (1.06%) Retail
Job Titles
1 25 (26.60%) Support Engineer
2 23 (24.47%) Network Engineer
3 22 (23.40%) Infrastructure Engineer
4 20 (21.28%) Infrastructure Support Engineer
5 19 (20.21%) 3rd Line Support
6 8 (8.51%) Project Manager
6 8 (8.51%) Voice Engineer
7 7 (7.45%) Telephony Engineer
8 6 (6.38%) Programme Manager
8 6 (6.38%) PRINCE2 Project Manager
9 5 (5.32%) Coordinator
9 5 (5.32%) Technical Support
9 5 (5.32%) Technical Support Engineer
9 5 (5.32%) Infrastructure Manager
9 5 (5.32%) Technical Engineer
10 4 (4.26%) Architect
10 4 (4.26%) IT Manager
10 4 (4.26%) Service Delivery Coordinator
11 3 (3.19%) Cisco Engineer
11 3 (3.19%) Senior Voice Engineer
Libraries, Frameworks & Software Standards
1 2 (2.13%) HTML
1 2 (2.13%) XML
2 1 (1.06%) iOS SDK
Miscellaneous
1 10 (10.64%) IVR
1 10 (10.64%) AVVID
2 6 (6.38%) PMI
3 4 (4.26%) SecurID
4 3 (3.19%) Mathematics
5 2 (2.13%) Physics
5 2 (2.13%) Clustering
5 2 (2.13%) Hedge funds
5 2 (2.13%) Mobile App
5 2 (2.13%) User Experience
6 1 (1.06%) Wiki
6 1 (1.06%) Social Network
Operating Systems
1 21 (22.34%) Windows
2 8 (8.51%) Windows 8
2 8 (8.51%) Windows Server 2012
3 7 (7.45%) Windows Server 2008
4 5 (5.32%) Windows 7
4 5 (5.32%) Linux
5 3 (3.19%) Windows Server 2003
5 3 (3.19%) CentOS
6 2 (2.13%) Ubuntu
6 2 (2.13%) Windows Vista
6 2 (2.13%) Windows XP
7 1 (1.06%) Mac OS X
7 1 (1.06%) Windows NT
7 1 (1.06%) Android
7 1 (1.06%) Fedora
7 1 (1.06%) Apple iOS
7 1 (1.06%) Oracle Linux
7 1 (1.06%) UNIX
Processes & Methodologies
1 32 (34.04%) ITIL
2 20 (21.28%) Project Management
3 13 (13.83%) Load Balancing
4 11 (11.70%) Change Management
5 10 (10.64%) Data Analysis
6 7 (7.45%) Service Delivery
7 6 (6.38%) PRINCE2
7 6 (6.38%) Matrix Management
7 6 (6.38%) Communications Security
8 5 (5.32%) Network Monitoring
8 5 (5.32%) Capacity Planning
9 4 (4.26%) Network Management
9 4 (4.26%) Kalman Filter
9 4 (4.26%) Mentoring
9 4 (4.26%) Validation
9 4 (4.26%) Stakeholder Management
10 3 (3.19%) Agile Software Development
10 3 (3.19%) Line Management
11 2 (2.13%) DevOps
11 2 (2.13%) Product Management
Programming Languages
1 4 (4.26%) SQL
2 3 (3.19%) Bash Shell
2 3 (3.19%) Java
3 2 (2.13%) Perl
3 2 (2.13%) C
3 2 (2.13%) Ruby
3 2 (2.13%) Python
4 1 (1.06%) Objective-C
4 1 (1.06%) C++
Qualifications
1 55 (58.51%) Cisco Certification
2 50 (53.19%) CCNP
3 45 (47.87%) CCNA
4 27 (28.72%) Microsoft Certification
5 25 (26.60%) MCSE
6 24 (25.53%) MCSA
7 21 (22.34%) JNCIA
8 6 (6.38%) PMP
8 6 (6.38%) PMI Certification
9 4 (4.26%) CCSP
10 3 (3.19%) MCP
11 2 (2.13%) Degree
12 1 (1.06%) LPIC
12 1 (1.06%) MCTS
12 1 (1.06%) CCIE
12 1 (1.06%) Avaya Certification
12 1 (1.06%) CCDP
Quality Assurance & Compliance
1 13 (13.83%) SLA
System Software
1 32 (34.04%) Active Directory
2 22 (23.40%) VMware Infrastructure
3 3 (3.19%) VMware ESXi
4 2 (2.13%) XenApp
4 2 (2.13%) Kamailio
5 1 (1.06%) VirtualBox
5 1 (1.06%) Hyper-V
5 1 (1.06%) ISA Server
5 1 (1.06%) VMware ESX
5 1 (1.06%) Microsoft Virtual Server
Systems Management
1 27 (28.72%) Cisco CUCM
2 20 (21.28%) SCOM
2 20 (21.28%) CiscoWorks
3 3 (3.19%) Opscode Chef
4 2 (2.13%) logstash
4 2 (2.13%) Backup Exec
5 1 (1.06%) WSUS
5 1 (1.06%) Nagios
5 1 (1.06%) Puppet
Vendors
1 49 (52.13%) Microsoft
2 43 (45.74%) Cisco
3 31 (32.98%) Juniper
4 30 (31.91%) VMware
5 20 (21.28%) SolarWinds
6 10 (10.64%) IronPort
7 9 (9.57%) Avaya
8 8 (8.51%) CheckPoint
9 7 (7.45%) Mitel
9 7 (7.45%) Verint
10 6 (6.38%) Blue Coat
11 4 (4.26%) Citrix
11 4 (4.26%) F5
11 4 (4.26%) Proofpoint
11 4 (4.26%) BT
12 3 (3.19%) Red Hat
13 2 (2.13%) Symantec
13 2 (2.13%) Websense
13 2 (2.13%) Siemens
13 2 (2.13%) WatchGuard