Period
to 23 July 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 23 July 2018 with a comparison to the same period in the previous 2 years.

Integrated Service Digital Network (ISDN)
England > London
6 months to
23 Jul 2018
Same period 2017 Same period 2016
Rank 792 782 807
Rank change year-on-year -10 +25 +93
Permanent jobs citing ISDN 40 52 81
As % of all permanent IT jobs advertised in London 0.057% 0.071% 0.098%
As % of the Communications & Networking category 0.40% 0.46% 0.62%
Number of salaries quoted 30 34 62
London median annual salary £57,500 £55,000 £50,000
Median salary % change year-on-year +4.55% +10.00% +33.33%
10th Percentile £21,500 £32,725 £31,250
90th Percentile £81,250 £63,875 £60,000
England median annual salary £50,000 £45,000 £45,000
% change year-on-year +11.11% - -

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 10,101 11,261 13,035
As % of all permanent IT jobs advertised in London 14.31% 15.33% 15.76%
Number of salaries quoted 8,258 9,282 11,160
London median annual salary £55,000 £54,250 £52,500
Median salary % change year-on-year +1.38% +3.33% +5.00%
10th Percentile £30,000 £30,000 £29,500
90th Percentile £85,000 £80,000 £78,750
England median annual salary £47,500 £45,000 £45,000
% change year-on-year +5.56% - -

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 23 July 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 23 July 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
West London +17 7 £57,500 - 1
South London +5 7 £23,000 -56.60%
East London -6 3 £21,500 -33.85%
Central London -19 3 £70,000 +16.67%
ISDN
England

For the 6 months to 23 July 2018, IT jobs citing ISDN also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all permanent job ads across the London region with a requirement for ISDN.

1 24 (60.00%) VoIP
2 22 (55.00%) Cisco
3 20 (50.00%) Unified Communications
4 16 (40.00%) IP Telephony
5 15 (37.50%) CCNP
5 15 (37.50%) Cisco Certification
6 14 (35.00%) Microsoft
6 14 (35.00%) WAN
7 13 (32.50%) Cisco CUCM
7 13 (32.50%) Self-Motivation
8 12 (30.00%) VPN
9 11 (27.50%) Active Directory
9 11 (27.50%) Firewall
9 11 (27.50%) Telecoms
10 10 (25.00%) H.323
10 10 (25.00%) MPLS
10 10 (25.00%) MGCP
10 10 (25.00%) Broadband
10 10 (25.00%) ITIL
11 9 (22.50%) ADSL
11 9 (22.50%) CCNA
11 9 (22.50%) Wi-Fi
11 9 (22.50%) Wireless
12 8 (20.00%) VMware
12 8 (20.00%) Time Management
12 8 (20.00%) VLAN
12 8 (20.00%) LAN
12 8 (20.00%) Presales
12 8 (20.00%) Analytical Skills
13 7 (17.50%) PABX

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 1 (2.50%) MS Exchange
Cloud Services
1 4 (10.00%) Slack
Communications & Networking
1 24 (60.00%) VoIP
2 20 (50.00%) Unified Communications
3 16 (40.00%) IP Telephony
4 14 (35.00%) WAN
5 12 (30.00%) VPN
6 11 (27.50%) Firewall
7 10 (25.00%) Broadband
7 10 (25.00%) H.323
7 10 (25.00%) MGCP
7 10 (25.00%) MPLS
8 9 (22.50%) ADSL
8 9 (22.50%) Wi-Fi
8 9 (22.50%) Wireless
9 8 (20.00%) LAN
9 8 (20.00%) VLAN
10 7 (17.50%) PABX
11 6 (15.00%) DHCP
11 6 (15.00%) DNS
11 6 (15.00%) TCP/IP
12 5 (12.50%) SSL
Database & Business Intelligence
1 1 (2.50%) SQL Server
General
1 11 (27.50%) Telecoms
2 4 (10.00%) Local Government
2 4 (10.00%) Multimedia
3 3 (7.50%) Advertising
4 2 (5.00%) Games
Job Titles
1 10 (25.00%) Voice Engineer
2 8 (20.00%) Cisco Engineer
2 8 (20.00%) Senior Voice Engineer
3 7 (17.50%) Consultant
4 5 (12.50%) Cisco Voice Engineer
4 5 (12.50%) IT Support
4 5 (12.50%) IT Support Specialist
4 5 (12.50%) Network Engineer
4 5 (12.50%) Support Specialist
5 4 (10.00%) Collaboration Consultant
5 4 (10.00%) Unified Communications Consultant
6 3 (7.50%) 1st Line Technical Support
6 3 (7.50%) 2nd Line Engineer
6 3 (7.50%) 3rd Line Engineer
6 3 (7.50%) 3rd Line Network Engineer
6 3 (7.50%) Cisco Network Engineer
6 3 (7.50%) Senior Cisco Engineer
6 3 (7.50%) Systems Engineer
6 3 (7.50%) Technical Support
6 3 (7.50%) Technology Consultant
Libraries, Frameworks & Software Standards
1 5 (12.50%) 802.1X
2 3 (7.50%) LDAP
3 2 (5.00%) XMPP
Miscellaneous
1 13 (32.50%) Self-Motivation
2 8 (20.00%) Analytical Skills
3 5 (12.50%) User Experience
4 3 (7.50%) CCTV
5 1 (2.50%) Smartphone
Operating Systems
1 7 (17.50%) Windows
2 1 (2.50%) Windows 8
2 1 (2.50%) Windows XP
Processes & Methodologies
1 10 (25.00%) ITIL
2 8 (20.00%) Presales
2 8 (20.00%) Time Management
3 5 (12.50%) Agile Software Development
3 5 (12.50%) Configuration Management
3 5 (12.50%) CRM
3 5 (12.50%) Fund Management
3 5 (12.50%) Information Security
3 5 (12.50%) Investment Management
3 5 (12.50%) Problem Management
3 5 (12.50%) Project Planning
3 5 (12.50%) Service Management
4 4 (10.00%) B2B
4 4 (10.00%) Telesales
5 3 (7.50%) Network Design
5 3 (7.50%) Problem-Solving
6 2 (5.00%) Network Monitoring
6 2 (5.00%) Network Planning
7 1 (2.50%) Desktop Virtualisation
7 1 (2.50%) People Management
Programming Languages
1 4 (10.00%) C
Qualifications
1 15 (37.50%) CCNP
1 15 (37.50%) Cisco Certification
2 9 (22.50%) CCNA
3 7 (17.50%) Degree
4 5 (12.50%) ITIL Certification
5 3 (7.50%) CCIE
6 2 (5.00%) CCDA
6 2 (5.00%) CCSA
6 2 (5.00%) CCSP
6 2 (5.00%) CCVP
6 2 (5.00%) HP APS
6 2 (5.00%) MCSA
6 2 (5.00%) Microsoft Certification
Quality Assurance & Compliance
1 1 (2.50%) SLA
System Software
1 11 (27.50%) Active Directory
2 6 (15.00%) Terminal Services
3 3 (7.50%) Virtual Machines
4 1 (2.50%) VMware ESXi
4 1 (2.50%) VMware Infrastructure
4 1 (2.50%) XenApp
Systems Management
1 13 (32.50%) Cisco CUCM
2 3 (7.50%) FortiGate
3 2 (5.00%) Cisco UCCX
4 1 (2.50%) SCCM
Vendors
1 22 (55.00%) Cisco
2 14 (35.00%) Microsoft
3 8 (20.00%) VMware
4 5 (12.50%) Google
5 4 (10.00%) Avaya
5 4 (10.00%) Ericsson
5 4 (10.00%) Mitel
5 4 (10.00%) Panasonic
5 4 (10.00%) ShoreTel
6 3 (7.50%) IronPort
6 3 (7.50%) MikroTik
6 3 (7.50%) Motorola
7 2 (5.00%) CheckPoint
7 2 (5.00%) HP
7 2 (5.00%) Juniper
7 2 (5.00%) Nokia
8 1 (2.50%) Apple
8 1 (2.50%) Citrix