The table below looks at the statistics for ISDN skills in IT jobs advertised for the London region. Included is a guide to the salaries offered in IT jobs that have cited ISDN over the 3 months to 3 December 2016 with a comparison to the same period over the previous 2 years.

3 months to
3 Dec 2016
Same period 2015 Same period 2014
Integrated Service Digital Network (ISDN)
Rank 580 622 605
Rank change year-on-year
+42 -17
Permanent jobs citing ISDN 15 41 57
As % of all permanent IT jobs located in London 0.043% 0.094% 0.13%
As % of the Communications & Networking category 0.26% 0.60% 0.73%
Number of salaries quoted 11 39 53
Median salary £55,500 £52,500 £47,500
Median salary % change year-on-year
+5.71% +10.52%
90% offered a salary of more than £52,500 £32,500 £40,000
10% offered a salary of more than £57,500 £57,500 £74,100
UK excluding London median salary £42,500 £36,500 £39,500
% change year-on-year
+16.43% -7.59%
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
5720 6867 7785
As % of all permanent IT jobs located in London 16.30% 15.73% 17.09%
Number of salaries quoted 4837 5768 6559
Median salary £52,500 £50,000 £47,500
Median salary % change year-on-year
+5.00% +5.26%
90% offered a salary of more than £31,500 £30,000 £30,000
10% offered a salary of more than £77,500 £70,000 £75,000
UK excluding London median salary £42,500 £42,500 £40,000
% change year-on-year
- +6.25%

ISDN
Jobs Demand Trend in London

The demand trend of job ads across the London region citing ISDN as a proportion of all IT jobs with a match in 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
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 3 months to 3 December 2016. 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
(Click see detailed
statistics and trends)
Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
City of London +30 4 £55,500 +0.90%
ISDN
England

ISDN
Top 30 Related IT Skills in London

For the 6 months to 3 December 2016, 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 54 (84.38%) Cisco
2 41 (64.06%) Cisco Certification
3 35 (54.69%) VoIP
4 26 (40.63%) CCNA
4 26 (40.63%) Firewall
5 25 (39.06%) Wireless
5 25 (39.06%) WAN
6 24 (37.50%) VPN
6 24 (37.50%) DNS
7 23 (35.94%) DHCP
8 20 (31.25%) ITIL
8 20 (31.25%) Telecoms
8 20 (31.25%) Video Conferencing
9 18 (28.13%) TCP/IP
9 18 (28.13%) MPLS
10 17 (26.56%) Skype for Business
10 17 (26.56%) Skype
11 16 (25.00%) Cisco Nexus
11 16 (25.00%) OSPF
11 16 (25.00%) XMPP
12 15 (23.44%) CCNP
12 15 (23.44%) Juniper
12 15 (23.44%) LAN
12 15 (23.44%) Unified Communications
13 14 (21.88%) Network Security
13 14 (21.88%) Project Management
14 13 (20.31%) Law
15 12 (18.75%) Citrix
15 12 (18.75%) LDAP
15 12 (18.75%) WebEx

ISDN
Top Related 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 17 (26.56%) Skype for Business
2 3 (4.69%) MS Exchange
3 2 (3.13%) Blackberry Enterprise Server
4 1 (1.56%) Confluence
Business Applications
1 6 (9.38%) Cisco SocialMiner
Cloud Services
1 2 (3.13%) Office 365
2 1 (1.56%) PaaS
Communications & Networking
1 35 (54.69%) VoIP
2 26 (40.63%) Firewall
3 25 (39.06%) WAN
3 25 (39.06%) Wireless
4 24 (37.50%) DNS
4 24 (37.50%) VPN
5 23 (35.94%) DHCP
6 18 (28.13%) MPLS
6 18 (28.13%) TCP/IP
7 17 (26.56%) Skype
8 16 (25.00%) Cisco Nexus
8 16 (25.00%) OSPF
9 15 (23.44%) LAN
9 15 (23.44%) Unified Communications
10 14 (21.88%) Network Security
11 12 (18.75%) LDAP
11 12 (18.75%) WebEx
12 11 (17.19%) IPsec
13 9 (14.06%) Cisco ASA
13 9 (14.06%) DSL
Database & Business Intelligence
1 1 (1.56%) SQL Server
Development Applications
1 1 (1.56%) JIRA
General
1 20 (31.25%) Telecoms
2 13 (20.31%) Law
3 4 (6.25%) Finance
4 3 (4.69%) Banking
4 3 (4.69%) Investment Banking
5 1 (1.56%) Financial Institution
5 1 (1.56%) Legal
5 1 (1.56%) Retail
Job Titles
1 21 (32.81%) Analyst
2 12 (18.75%) Cisco Analyst
2 12 (18.75%) Infrastructure Engineer
3 11 (17.19%) Network Engineer
3 11 (17.19%) Telecoms Analyst
4 8 (12.50%) Network Analyst
4 8 (12.50%) Telephony Engineer
5 7 (10.94%) Support Engineer
5 7 (10.94%) Voice Analyst
6 6 (9.38%) Cisco Engineer
6 6 (9.38%) Cisco Network Analyst
6 6 (9.38%) Network Infrastructure Engineer
6 6 (9.38%) Voice Engineer
7 5 (7.81%) Infrastructure Support
7 5 (7.81%) Infrastructure Support Engineer
8 4 (6.25%) Consultant
8 4 (6.25%) Telephony Support
9 3 (4.69%) Network Manager
9 3 (4.69%) Network Team Leader
9 3 (4.69%) Telecoms Engineer
Libraries, Frameworks & Software Standards
1 16 (25.00%) XMPP
Miscellaneous
1 20 (31.25%) Video Conferencing
2 12 (18.75%) Analytical Skills
3 11 (17.19%) Data Centre
4 6 (9.38%) e-Health
5 2 (3.13%) Blackberry
5 2 (3.13%) Handset
5 2 (3.13%) Management Information System
5 2 (3.13%) PKI
5 2 (3.13%) Smartphone
6 1 (1.56%) BYOD
6 1 (1.56%) Mathematics
6 1 (1.56%) User Experience
6 1 (1.56%) Virtual Team
6 1 (1.56%) Wiki
Operating Systems
1 3 (4.69%) Windows
2 2 (3.13%) Windows 7
3 1 (1.56%) CentOS
3 1 (1.56%) Linux
3 1 (1.56%) Ubuntu
3 1 (1.56%) Unix
Processes & Methodologies
1 20 (31.25%) ITIL
2 14 (21.88%) Project Management
3 9 (14.06%) Network Design
4 8 (12.50%) Kalman Filter
4 8 (12.50%) Virtual Infrastructure
4 8 (12.50%) WAN Optimisation
5 7 (10.94%) Network Management
5 7 (10.94%) Network Monitoring
6 6 (9.38%) Capacity Planning
6 6 (9.38%) Problem Management
7 3 (4.69%) Mentoring
8 2 (3.13%) Change Control
8 2 (3.13%) Document Management
8 2 (3.13%) Information Management
8 2 (3.13%) Load Balancing
8 2 (3.13%) Operations Management
9 1 (1.56%) Asset Management
9 1 (1.56%) Configuration Management
9 1 (1.56%) Continuous Improvement
9 1 (1.56%) E-Commerce
Programming Languages
1 1 (1.56%) Bash Shell
1 1 (1.56%) C
1 1 (1.56%) PowerShell
1 1 (1.56%) Python
1 1 (1.56%) SQL
1 1 (1.56%) VBScript
Qualifications
1 41 (64.06%) Cisco Certification
2 26 (40.63%) CCNA
3 15 (23.44%) CCNP
4 8 (12.50%) Security Cleared
5 7 (10.94%) DV Cleared
6 6 (9.38%) CCNP Voice
6 6 (9.38%) JNCIA
6 6 (9.38%) JNCIE
6 6 (9.38%) JNCIP
6 6 (9.38%) JNCIS
7 4 (6.25%) ITIL Foundation Certificate
8 3 (4.69%) ITIL Certification
8 3 (4.69%) Microsoft Certification
9 1 (1.56%) CCIE
9 1 (1.56%) CISSP
9 1 (1.56%) LPIC
9 1 (1.56%) MCSA
9 1 (1.56%) MCSE
9 1 (1.56%) SC Cleared
9 1 (1.56%) SSCP
Quality Assurance & Compliance
1 2 (3.13%) SLA
System Software
1 9 (14.06%) VMware ESX
1 9 (14.06%) VMware Infrastructure
2 1 (1.56%) Active Directory
2 1 (1.56%) VirtualBox
Systems Management
1 10 (15.63%) Cisco CUCM
1 10 (15.63%) Cisco UCCE
2 6 (9.38%) Cisco UCCX
3 2 (3.13%) Cisco Prime
3 2 (3.13%) SolarWinds Orion
4 1 (1.56%) Nagios
4 1 (1.56%) Opscode Chef
4 1 (1.56%) Puppet
4 1 (1.56%) SCCM
4 1 (1.56%) SCOM
4 1 (1.56%) TrustSec
Vendors
1 54 (84.38%) Cisco
2 15 (23.44%) Juniper
3 12 (18.75%) Citrix
4 11 (17.19%) VMware
5 10 (15.63%) Palo Alto
6 8 (12.50%) CheckPoint
6 8 (12.50%) Meraki
7 6 (9.38%) Aerohive Networks
7 6 (9.38%) Mitel
7 6 (9.38%) Red Box
8 5 (7.81%) Avaya
8 5 (7.81%) Microsoft
9 4 (6.25%) IPFX
10 2 (3.13%) AppSense
10 2 (3.13%) Barracuda Networks
10 2 (3.13%) F5
10 2 (3.13%) Interwoven
10 2 (3.13%) SolarWinds
11 1 (1.56%) Nortel
11 1 (1.56%) Red Hat