The following table provides summary statistics for permanent job vacancies advertised in London with a requirement for PSTN skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited PSTN over the 3 months to 29 March 2017 with a comparison to the same period in the previous 2 years.

Public Switched Telecom Network (PSTN)
England / London
3 months to
29 Mar 2017
Same period 2016 Same period 2015
Rank 583 631 655
Rank change year-on-year +48 +24  
Permanent jobs citing PSTN 5 23 7
As % of all permanent IT jobs advertised in London 0.015% 0.054% 0.016%
As % of the Communications & Networking category 0.094% 0.34% 0.091%
Number of salaries quoted 4 23 7
Median salary £31,250 £52,500 £42,500
Median salary % change year-on-year -40.47% +23.52%  
90% offered a salary of more than £25,400 £23,000 £39,000
10% offered a salary of more than £35,000 £59,000 £54,300
UK excluding London median salary £60,000 £49,500 £37,500
% change year-on-year +21.21% +32.00%  

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

Communications & Computer Network Skills
London
Permanent job vacancies with a requirement for communications and computer networking skills 5307 6696 7655
As % of all permanent IT job vacancies advertised in London 15.70% 15.80% 17.97%
Number of salaries quoted 4476 5657 6389
Median salary £52,500 £51,500 £51,500
Median salary % change year-on-year +1.94% -  
90% offered a salary of more than £30,500 £31,000 £30,000
10% offered a salary of more than £75,000 £75,000 £72,500
UK excluding London median salary £40,000 £42,500 £41,500
% change year-on-year -5.88% +2.40%  

PSTN
Job Vacancy Trend in London

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

Job vacancy trend for PSTN in London

PSTN
Salary Trend in London

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing PSTN in London.

Salary trend for PSTN in London

PSTN
Salary Histogram in London

The salary distribution of IT jobs citing PSTN in London over the 3 months to 29 March 2017.

Salary histogram for PSTN in London

For the 6 months to 29 March 2017, IT jobs citing PSTN 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 PSTN.

1 4 (66.67%) Telecoms
1 4 (66.67%) 4G
2 3 (50.00%) PBX
2 3 (50.00%) VoIP
2 3 (50.00%) 3G
3 2 (33.33%) LAN
4 1 (16.67%) Cisco CUCM
4 1 (16.67%) Mobile App
4 1 (16.67%) Exchange Server 2013
4 1 (16.67%) Performance Analysis
4 1 (16.67%) Docker
4 1 (16.67%) DevOps
4 1 (16.67%) Kubernetes
4 1 (16.67%) Etrali
4 1 (16.67%) Openreach
4 1 (16.67%) DKIM
4 1 (16.67%) DMARC
4 1 (16.67%) Mozilla Thunderbird
4 1 (16.67%) A/B Testing
4 1 (16.67%) DSL
4 1 (16.67%) H.323
4 1 (16.67%) BT
4 1 (16.67%) Windows
4 1 (16.67%) Linux
4 1 (16.67%) CRM
4 1 (16.67%) MS Exchange
4 1 (16.67%) ADSL
4 1 (16.67%) Broadband
4 1 (16.67%) WLAN
4 1 (16.67%) WAN

PSTN
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 (16.67%) Exchange Server 2007
1 1 (16.67%) Exchange Server 2010
1 1 (16.67%) Exchange Server 2013
1 1 (16.67%) MS Exchange
1 1 (16.67%) Skype for Business
Applications
1 1 (16.67%) Mozilla Thunderbird
Communications & Networking
1 4 (66.67%) 4G
2 3 (50.00%) 3G
2 3 (50.00%) PBX
2 3 (50.00%) VoIP
3 2 (33.33%) LAN
4 1 (16.67%) 2G
4 1 (16.67%) ADSL
4 1 (16.67%) Broadband
4 1 (16.67%) DHCP
4 1 (16.67%) DNS
4 1 (16.67%) DSL
4 1 (16.67%) H.323
4 1 (16.67%) IMAP
4 1 (16.67%) IP Telephony
4 1 (16.67%) NGN
4 1 (16.67%) POP3
4 1 (16.67%) SMTP
4 1 (16.67%) TCP/IP
4 1 (16.67%) WAN
4 1 (16.67%) WLAN
Development Applications
1 1 (16.67%) Git (software)
General
1 4 (66.67%) Telecoms
2 1 (16.67%) Banking
Job Titles
1 1 (16.67%) Analyst
1 1 (16.67%) Cisco Engineer
1 1 (16.67%) Cisco Voice Engineer
1 1 (16.67%) Coordinator
1 1 (16.67%) Operations Analyst
1 1 (16.67%) Technical Analyst
1 1 (16.67%) Technical Operations Analyst
1 1 (16.67%) Voice Engineer
1 1 (16.67%) VoIP Engineer
Libraries, Frameworks & Software Standards
1 1 (16.67%) FreeSWITCH
Miscellaneous
1 1 (16.67%) Mobile App
Operating Systems
1 1 (16.67%) Linux
1 1 (16.67%) Windows
Processes & Methodologies
1 1 (16.67%) A/B Testing
1 1 (16.67%) B2B
1 1 (16.67%) Capacity Planning
1 1 (16.67%) CRM
1 1 (16.67%) DevOps
1 1 (16.67%) Fault Management
1 1 (16.67%) Open Source
1 1 (16.67%) Performance Analysis
1 1 (16.67%) Validation
System Software
1 1 (16.67%) Docker
Systems Management
1 1 (16.67%) Cisco CUCM
1 1 (16.67%) Kubernetes
Vendors
1 1 (16.67%) BT
1 1 (16.67%) Cisco
1 1 (16.67%) Etrali
1 1 (16.67%) Openreach
1 1 (16.67%) Speakerbus