The following table provides summary statistics for contract job vacancies advertised in London with a requirement for ISDN skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited ISDN over the 3 months to 24 March 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

3 months to
24 Mar 2017
Same period 2016 Same period 2015
Integrated Service Digital Network (ISDN)
England / London
Rank 389 407 395
Rank change year-on-year +18 -12  
Contract jobs citing ISDN 11 21 14
As % of all contract IT jobs advertised in London 0.057% 0.095% 0.067%
As % of the Communications & Networking category 0.45% 0.75% 0.49%
Number of daily rates quoted 7 16 5
Median daily rate £370 £400 £400
Median daily rate % change year-on-year -7.50% -  
UK excluding London median daily rate £224 £300 £270
% change year-on-year -25.50% +11.11%  
Number of hourly rates quoted 0 2 2
Median hourly rate - £26.00 £13.73
Median hourly rate % change year-on-year - +89.36%  
UK excluding London median hourly rate - £35.69 -

ISDN is in the communications and computer networking skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in London with a requirement for communications and computer networking skills.

Contract Communications & Computer Network Skills
London
Contract job vacancies with a requirement for communications and computer networking skills 2440 2799 2845
As % of all contract IT job vacancies advertised in London 12.53% 12.69% 13.56%
Number of daily rates quoted 1625 1895 1828
Median daily rate £445 £425 £400
Median daily rate % change year-on-year +4.70% +6.25%  
90% offered a daily rate of more than £288 £250 £238
10% offered a daily rate of more than £575 £560 £550
UK excluding London median daily rate £375 £363 £347
% change year-on-year +3.44% +4.32%  
Number of hourly rates quoted 65 58 85
Median hourly rate £42.25 £21.92 £21.50
Median hourly rate % change year-on-year +92.74% +1.95%  
90% offered a hourly rate of more than £17.38 £12.83 £13.47
10% offered a hourly rate of more than £50.00 £43.00 £50.00
UK excluding London median hourly rate £22.50 £37.00 £29.00
% change year-on-year -39.18% +27.58%  

ISDN
Job Vacancy Trend in London

The job posting trend of jobs advertised in London citing ISDN as a proportion of all contract or permanent IT jobs with a match in the Communications & Networking category.

Job vacancy trend for ISDN in London

ISDN
Contractor Daily Rate Trend in London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing ISDN in London.

Contractor daily rate trend for ISDN in London

ISDN
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing ISDN in London over the 3 months to 24 March 2017.

Contractor daily rate histogram for ISDN in London

ISDN
Contractor Hourly Rate Trend in London

This chart provides the 3-month moving average for hourly rates quoted in IT contractor jobs citing ISDN in London.

Contractor hourly rate trend for ISDN in London

ISDN
Contract Job Locations in London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing ISDN within the London region over the 3 months to 24 March 2017. 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 Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
City of London +5 2 - -
ISDN
England

ISDN
Top 30 Related IT Skills in London

For the 6 months to 24 March 2017, IT contractor jobs citing ISDN also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the London region with a requirement for ISDN.

1 20 (74.07%) Cisco
2 14 (51.85%) Microsoft
3 12 (44.44%) VoIP
4 10 (37.04%) Firewall
5 9 (33.33%) MS Office
5 9 (33.33%) Windows
6 8 (29.63%) MGCP
6 8 (29.63%) Wireless
6 8 (29.63%) Video Conferencing
6 8 (29.63%) Skype for Business
7 7 (25.93%) Cisco IOS
7 7 (25.93%) Smartphone
7 7 (25.93%) LAN
7 7 (25.93%) WAN
7 7 (25.93%) Citrix
8 6 (22.22%) PBX
8 6 (22.22%) OSPF
8 6 (22.22%) Network Security
8 6 (22.22%) Wireshark
8 6 (22.22%) Finance
8 6 (22.22%) Unified Communications
8 6 (22.22%) Cisco Nexus
8 6 (22.22%) NX-OS
8 6 (22.22%) Skype
9 5 (18.52%) Service Delivery
9 5 (18.52%) MS Exchange
9 5 (18.52%) Linux
9 5 (18.52%) VPN
9 5 (18.52%) DNS
9 5 (18.52%) Active Directory

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 8 (29.63%) Skype for Business
2 5 (18.52%) MS Exchange
3 2 (7.41%) Exchange Server 2010
4 1 (3.70%) Apache
4 1 (3.70%) Blackberry Enterprise Server
4 1 (3.70%) IIS
Applications
1 9 (33.33%) MS Office
2 4 (14.81%) MS Excel
3 1 (3.70%) MS Visio
Cloud Services
1 4 (14.81%) Amazon AWS
1 4 (14.81%) Office 365
1 4 (14.81%) Virtual Private Cloud
2 1 (3.70%) Mimecast
2 1 (3.70%) SaaS
Communications & Networking
1 12 (44.44%) VoIP
2 10 (37.04%) Firewall
3 8 (29.63%) MGCP
3 8 (29.63%) Wireless
4 7 (25.93%) Cisco IOS
4 7 (25.93%) LAN
4 7 (25.93%) WAN
5 6 (22.22%) Cisco Nexus
5 6 (22.22%) Network Security
5 6 (22.22%) NX-OS
5 6 (22.22%) OSPF
5 6 (22.22%) PBX
5 6 (22.22%) Skype
5 6 (22.22%) Unified Communications
5 6 (22.22%) Wireshark
6 5 (18.52%) DHCP
6 5 (18.52%) DNS
6 5 (18.52%) VPN
7 4 (14.81%) Ethernet
7 4 (14.81%) TCP/IP
Database & Business Intelligence
1 1 (3.70%) MySQL
General
1 6 (22.22%) Finance
2 3 (11.11%) Telecoms
3 2 (7.41%) Banking
3 2 (7.41%) Corporate Banking
4 1 (3.70%) Financial Institution
4 1 (3.70%) Legal
4 1 (3.70%) Local Government
4 1 (3.70%) Retail
Job Titles
1 4 (14.81%) Administrator
1 4 (14.81%) Audio Visual Technician
1 4 (14.81%) Unified Communications Engineer
2 3 (11.11%) Analyst
2 3 (11.11%) Cisco Engineer
2 3 (11.11%) Information Security Administrator
2 3 (11.11%) Lync Engineer
2 3 (11.11%) Network Administrator
2 3 (11.11%) Network Security Administrator
2 3 (11.11%) Security Administrator
3 2 (7.41%) Architect
3 2 (7.41%) Cisco Network Engineer
3 2 (7.41%) Cisco Specialist
3 2 (7.41%) Cisco VoIP Specialist
3 2 (7.41%) Infrastructure Engineer
3 2 (7.41%) Mitel Specialist
3 2 (7.41%) Network Engineer
3 2 (7.41%) Technical Architect
3 2 (7.41%) Telecoms Specialist
3 2 (7.41%) VoIP Specialist
Libraries, Frameworks & Software Standards
1 3 (11.11%) Web Services
2 1 (3.70%) 802.1X
2 1 (3.70%) RFC 2833
Miscellaneous
1 8 (29.63%) Video Conferencing
2 7 (25.93%) Smartphone
3 4 (14.81%) Distributed Denial-of-Service
3 4 (14.81%) Management Information System
4 3 (11.11%) Virtual Team
5 2 (7.41%) Handset
5 2 (7.41%) IVR
6 1 (3.70%) Blackberry
6 1 (3.70%) Equities
6 1 (3.70%) Fixed Income
Operating Systems
1 9 (33.33%) Windows
2 5 (18.52%) Linux
3 4 (14.81%) Unix
3 4 (14.81%) Windows Server
4 3 (11.11%) Red Hat Enterprise Linux
4 3 (11.11%) Windows Server 2012
5 1 (3.70%) Android
5 1 (3.70%) Windows 7
5 1 (3.70%) Windows Server 2008
Processes & Methodologies
1 5 (18.52%) Service Delivery
2 4 (14.81%) DDoS Mitigation
2 4 (14.81%) E-Discovery
2 4 (14.81%) Information Security
2 4 (14.81%) ITIL
2 4 (14.81%) Network Design
2 4 (14.81%) Penetration Testing
2 4 (14.81%) Project Management
3 3 (11.11%) Load Balancing
3 3 (11.11%) Mentoring
3 3 (11.11%) Multi-Factor Authentication
3 3 (11.11%) Service Management
4 2 (7.41%) Incident Management
4 2 (7.41%) Matrix Management
4 2 (7.41%) Migration
4 2 (7.41%) Network Management
4 2 (7.41%) Network Monitoring
4 2 (7.41%) Risk Management
4 2 (7.41%) Stakeholder Management
4 2 (7.41%) Statistics
Programming Languages
1 1 (3.70%) SQL
Qualifications
1 3 (11.11%) Cisco Certification
2 2 (7.41%) CCNP
3 1 (3.70%) CCSE
3 1 (3.70%) CISSP
3 1 (3.70%) GIAC
3 1 (3.70%) ITIL Certification
3 1 (3.70%) Microsoft Certification
Quality Assurance & Compliance
1 1 (3.70%) PCI DSS
System Software
1 5 (18.52%) Active Directory
2 3 (11.11%) Firmware
3 2 (7.41%) Hyper-V
3 2 (7.41%) ProxySG
4 1 (3.70%) Microsoft Virtual Server
4 1 (3.70%) Virtual Servers
4 1 (3.70%) VMware Infrastructure
4 1 (3.70%) vSphere
Systems Management
1 4 (14.81%) EnCase
1 4 (14.81%) Nagios
2 2 (7.41%) Cisco CUCM
2 2 (7.41%) Cisco UCCX
2 2 (7.41%) Foglight
2 2 (7.41%) WSUS
3 1 (3.70%) AirWatch
3 1 (3.70%) Cisco CME
Vendors
1 20 (74.07%) Cisco
2 14 (51.85%) Microsoft
3 7 (25.93%) Citrix
4 4 (14.81%) Avaya
4 4 (14.81%) CheckPoint
4 4 (14.81%) Infoblox
4 4 (14.81%) Mitel
4 4 (14.81%) Riverbed
4 4 (14.81%) Sonus
5 3 (11.11%) Polycom
5 3 (11.11%) Red Hat
5 3 (11.11%) Ruckus Wireless
5 3 (11.11%) VMware
6 2 (7.41%) Bloomberg
6 2 (7.41%) Blue Coat
6 2 (7.41%) Dell
6 2 (7.41%) Juniper
6 2 (7.41%) NetScout
6 2 (7.41%) Reuters
6 2 (7.41%) Siemens