The table below looks at the statistics for ISDN skills in IT jobs advertised for the City of London region. Included is a guide to the average salaries offered in IT jobs that have cited ISDN over the 3 months to 31 July 2015 with a comparison to the same period in the previous 2 years.

Location
3 months to
31 Jul 2015
Same period 2014 Same period 2013
Integrated Service Digital Network (ISDN)
Rank 306 327 326
Rank change year-on-year
+21 -1
Permanent jobs citing ISDN 2 7 3
As % of all permanent IT jobs located in the City of London 0.019% 0.057% 0.025%
As % of the Communications & Networking category 0.14% 0.34% 0.16%
Number of salaries quoted 2 6 2
Average salary £57,500 £40,000 £42,500
Average salary % change year-on-year
+43.75% -5.88%
UK excluding London average salary £50,000 £37,500 £37,500
% change year-on-year
+33.33% -
ISDN
London

The following table is for comparison with the above and provides statistics for the entire Communications & Networking category in permanent jobs advertised in the City of London region.

Communications & Networking Category
City of London
Permanent IT job ads with a match in the
Communications & Networking category
1448 2048 1890
As % of all permanent IT jobs located in the City of London 13.90% 16.54% 15.78%
Number of salaries quoted 1235 1716 1688
Average salary £52,500 £52,500 £52,500
90% offered a salary of more than £30,000 £32,500 £35,000
10% offered a salary of more than £75,000 £70,000 £70,000
UK excluding London average salary £41,000 £40,000 £40,000
% change year-on-year
+2.50% -

ISDN
Jobs Demand Trend in the City of London

This chart provides a 3-month moving total of permanent IT jobs citing ISDN across the City of London region as a proportion of the total demand within the Communications & Networking category.

ISDN Jobs Demand Trend in the City of London

ISDN
Salary Trend in the City of London

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing ISDN across the City of London region.

ISDN Salary Trend in the City of London

ISDN
Top 25 Related IT Skills in the City of London

For the 6 months to 31 July 2015, IT jobs across the City of 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 2 (66.67%) Avaya
1 2 (66.67%) Red Hat
1 2 (66.67%) VoIP
1 2 (66.67%) Windows
1 2 (66.67%) MS Excel
1 2 (66.67%) Finance
1 2 (66.67%) CMS
1 2 (66.67%) Network Architecture
1 2 (66.67%) Lync
1 2 (66.67%) Avaya Modular Messaging
2 1 (33.33%) Change Control
2 1 (33.33%) Cisco ASA
2 1 (33.33%) IP Telephony
2 1 (33.33%) Cisco IPT
2 1 (33.33%) LAN
2 1 (33.33%) WLAN
2 1 (33.33%) WAN
2 1 (33.33%) Cisco
2 1 (33.33%) CCNA
2 1 (33.33%) Cisco Certification
2 1 (33.33%) MPLS
2 1 (33.33%) OSPF
2 1 (33.33%) EIGRP
2 1 (33.33%) Firewall
2 1 (33.33%) Wireless

ISDN
Top Related IT Skills in the City of London by Category

For the 6 months to 31 July 2015, IT jobs across the City of 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 2 (66.67%) CMS
1 2 (66.67%) Lync
Applications
1 2 (66.67%) MS Excel
Communications & Networking
1 2 (66.67%) VoIP
1 2 (66.67%) Avaya Modular Messaging
2 1 (33.33%) LAN
2 1 (33.33%) WLAN
2 1 (33.33%) WAN
2 1 (33.33%) MPLS
2 1 (33.33%) OSPF
2 1 (33.33%) EIGRP
2 1 (33.33%) Firewall
2 1 (33.33%) Wireless
2 1 (33.33%) IP Telephony
2 1 (33.33%) Cisco IPT
2 1 (33.33%) Cisco ASA
General
1 2 (66.67%) Finance
Job Titles
1 2 (66.67%) Telephony Engineer
1 2 (66.67%) Avaya Engineer
2 1 (33.33%) Analyst
2 1 (33.33%) Network Analyst
Operating Systems
1 2 (66.67%) Windows
Processes & Methodologies
1 2 (66.67%) Network Architecture
2 1 (33.33%) Change Control
Qualifications
1 1 (33.33%) CCNA
1 1 (33.33%) Cisco Certification
Vendors
1 2 (66.67%) Avaya
1 2 (66.67%) Red Hat
2 1 (33.33%) Cisco