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 June 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.

Integrated Service Digital Network (ISDN)
England / London
3 months to
24 Jun 2017
Same period 2016 Same period 2015
Rank 387 402 396
Rank change year-on-year +15 -6  
Contract jobs citing ISDN 25 26 26
As % of all contract IT jobs advertised in London 0.12% 0.12% 0.11%
As % of the Communications & Networking category 1.11% 0.86% 0.84%
Number of daily rates quoted 17 14 4
Median daily rate £388 £279 £380
Median daily rate % change year-on-year +39.13% -26.71%  
90% offered a daily rate of more than £296 £145 £227
10% offered a daily rate of more than £484 £366 £400
UK excluding London median daily rate £400 £336 £338
% change year-on-year +19.04% -0.44%  
Number of hourly rates quoted 3 2 4
Median hourly rate £24.86 £26.00 £18.00
Median hourly rate % change year-on-year -4.38% +44.44%  
UK excluding London median hourly rate - £12.38 £41.29
% change year-on-year - -70.02%  

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 2244 3010 3113
As % of all contract IT job vacancies advertised in London 10.98% 13.89% 13.30%
Number of daily rates quoted 1497 2047 2008
Median daily rate £450 £425 £388
Median daily rate % change year-on-year +5.88% +9.67%  
90% offered a daily rate of more than £238 £245 £225
10% offered a daily rate of more than £600 £585 £550
UK excluding London median daily rate £375 £368 £345
% change year-on-year +2.04% +6.52%  
Number of hourly rates quoted 66 47 93
Median hourly rate £24.93 £22.00 £18.86
Median hourly rate % change year-on-year +13.31% +16.67%  
90% offered a hourly rate of more than £14.78 £12.05 £13.00
10% offered a hourly rate of more than £50.00 £42.50 £50.00
UK excluding London median hourly rate £28.00 £32.50 £25.00
% change year-on-year -13.84% +30.00%  

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 June 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 contractor hourly rates quoted in IT 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 June 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 +7 11 £413 +50.00%
Docklands, London +2 1 £450 +5.88%
ISDN
England

For the 6 months to 24 June 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 31 (86.11%) Cisco
2 25 (69.44%) TCP/IP
3 21 (58.33%) Firewall
4 19 (52.78%) Cisco Certification
5 18 (50.00%) VoIP
6 15 (41.67%) Ethernet
6 15 (41.67%) VLAN
7 13 (36.11%) WAN
8 11 (30.56%) Wireless
8 11 (30.56%) Network Management
8 11 (30.56%) 802.1X
9 10 (27.78%) HSRP
9 10 (27.78%) Network Security
9 10 (27.78%) LAN
9 10 (27.78%) CCNA
10 9 (25.00%) Windows
10 9 (25.00%) Cisco IOS
10 9 (25.00%) Cisco Nexus
11 8 (22.22%) Cisco CUCM
11 8 (22.22%) DHCP
11 8 (22.22%) CCNP
11 8 (22.22%) VPN
11 8 (22.22%) DNS
12 7 (19.44%) Microsoft
12 7 (19.44%) PPP
12 7 (19.44%) SNMP
12 7 (19.44%) Cisco Prime
12 7 (19.44%) TACACS
12 7 (19.44%) Q.931
12 7 (19.44%) DPNSS

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 4 (11.11%) Skype for Business
2 1 (2.78%) Exchange Server 2010
2 1 (2.78%) IIS
2 1 (2.78%) MS Exchange
Applications
1 1 (2.78%) Microsoft Excel
1 1 (2.78%) Microsoft Office
1 1 (2.78%) Microsoft PowerPoint
1 1 (2.78%) MS Visio
Business Applications
1 1 (2.78%) Cisco SocialMiner
Cloud Services
1 5 (13.89%) Amazon AWS
1 5 (13.89%) Virtual Private Cloud
Communications & Networking
1 25 (69.44%) TCP/IP
2 21 (58.33%) Firewall
3 18 (50.00%) VoIP
4 15 (41.67%) Ethernet
4 15 (41.67%) VLAN
5 13 (36.11%) WAN
6 11 (30.56%) Wireless
7 10 (27.78%) HSRP
7 10 (27.78%) LAN
7 10 (27.78%) Network Security
8 9 (25.00%) Cisco IOS
8 9 (25.00%) Cisco Nexus
9 8 (22.22%) DHCP
9 8 (22.22%) DNS
9 8 (22.22%) VPN
10 7 (19.44%) DPNSS
10 7 (19.44%) PPP
10 7 (19.44%) Q.931
10 7 (19.44%) SNMP
10 7 (19.44%) TACACS
General
1 4 (11.11%) Telecoms
2 1 (2.78%) Banking
2 1 (2.78%) Corporate Banking
2 1 (2.78%) Finance
2 1 (2.78%) Local Government
Job Titles
1 9 (25.00%) Network Engineer
2 7 (19.44%) Cisco Engineer
3 6 (16.67%) Security Engineer
4 3 (8.33%) Administrator
4 3 (8.33%) Cisco Network Engineer
4 3 (8.33%) Cisco Specialist
4 3 (8.33%) Data Centre Engineer
4 3 (8.33%) Senior Network Engineer
5 2 (5.56%) Cisco VoIP Specialist
5 2 (5.56%) DV Cleared Network Engineer
5 2 (5.56%) ICT Engineer
5 2 (5.56%) Information Security Administrator
5 2 (5.56%) Mitel Specialist
5 2 (5.56%) Network Administrator
5 2 (5.56%) Network Security Administrator
5 2 (5.56%) Network Specialist
5 2 (5.56%) Senior Security Engineer
5 2 (5.56%) Technical Architect
5 2 (5.56%) Telecoms Specialist
5 2 (5.56%) VoIP Specialist
Libraries, Frameworks & Software Standards
1 11 (30.56%) 802.1X
2 2 (5.56%) Web Services
3 1 (2.78%) XMPP
Miscellaneous
1 5 (13.89%) Distributed Denial-of-Service
2 3 (8.33%) Data Centre
3 2 (5.56%) Handset
3 2 (5.56%) IVR
3 2 (5.56%) Management Information System
4 1 (2.78%) Analytical Skills
Operating Systems
1 9 (25.00%) Windows
2 3 (8.33%) Linux
2 3 (8.33%) Red Hat Enterprise Linux
3 1 (2.78%) Unix
3 1 (2.78%) Windows 7
3 1 (2.78%) Windows Server
3 1 (2.78%) Windows Server 2008
3 1 (2.78%) Windows Server 2012
Processes & Methodologies
1 11 (30.56%) Network Management
2 7 (19.44%) Migration
2 7 (19.44%) Network Design
3 5 (13.89%) DDoS Mitigation
3 5 (13.89%) E-Discovery
3 5 (13.89%) Load Balancing
3 5 (13.89%) Penetration Testing
4 4 (11.11%) Network Monitoring
4 4 (11.11%) Project Management
5 3 (8.33%) High Availability
5 3 (8.33%) Incident Management
5 3 (8.33%) Information Security
6 2 (5.56%) ITIL
6 2 (5.56%) Matrix Management
6 2 (5.56%) Multi-Factor Authentication
6 2 (5.56%) Risk Management
6 2 (5.56%) Stakeholder Management
7 1 (2.78%) Configuration Management
7 1 (2.78%) Service Delivery
7 1 (2.78%) Service Management
Programming Languages
1 1 (2.78%) SQL
Qualifications
1 19 (52.78%) Cisco Certification
2 10 (27.78%) CCNA
3 8 (22.22%) CCNP
4 4 (11.11%) DV Cleared
4 4 (11.11%) Security Cleared
5 2 (5.56%) CCSE
5 2 (5.56%) CISSP
5 2 (5.56%) GIAC
6 1 (2.78%) CCNP Voice
Quality Assurance & Compliance
1 1 (2.78%) PCI DSS
System Software
1 2 (5.56%) Firmware
2 1 (2.78%) Active Directory
2 1 (2.78%) Hyper-V
2 1 (2.78%) Microsoft Virtual Server
2 1 (2.78%) ProxySG
2 1 (2.78%) Virtual Servers
2 1 (2.78%) VMware Infrastructure
Systems Management
1 8 (22.22%) Cisco CUCM
2 7 (19.44%) Cisco Prime
3 5 (13.89%) Cisco UCCX
3 5 (13.89%) EnCase
3 5 (13.89%) Nagios
Vendors
1 31 (86.11%) Cisco
2 7 (19.44%) Microsoft
2 7 (19.44%) SolarWinds
3 6 (16.67%) CheckPoint
4 5 (13.89%) F5
4 5 (13.89%) Infoblox
4 5 (13.89%) Juniper
4 5 (13.89%) Riverbed
5 4 (11.11%) Avaya
5 4 (11.11%) Citrix
5 4 (11.11%) Mitel
6 3 (8.33%) Fortinet
6 3 (8.33%) Red Hat
6 3 (8.33%) Ruckus Wireless
7 2 (5.56%) Red Box
7 2 (5.56%) Siemens
8 1 (2.78%) Bloomberg
8 1 (2.78%) Blue Coat
8 1 (2.78%) NetScout
8 1 (2.78%) Reuters