The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for PSTN skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited PSTN over the 3 months to 29 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.

Public Switched Telecom Network (PSTN)
London > City of London
3 months to
29 Jun 2017
Same period 2016 Same period 2015
Rank 167 162 204
Rank change year-on-year -5 +42  
Contract jobs citing PSTN 2 1 6
As % of all contract IT jobs advertised in the City of London 0.061% 0.030% 0.10%
As % of the Communications & Networking category 0.59% 0.21% 0.80%
Number of daily rates quoted 1 1 6
City of London median daily rate £535 £375 £375
Median daily rate % change year-on-year +42.66% -  
10th Percentile £518 £363 £316
90th Percentile £553 £388 £416
London median daily rate £580 £388 £375
% change year-on-year +49.67% +3.33%  
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
London median hourly rate - - -

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 contract job vacancies advertised in the City of London with a requirement for communications and computer networking skills.

Contract Communications & Computer Network Skills
City of London
Contract job vacancies with a requirement for communications and computer networking skills 341 469 748
As % of all contract IT job vacancies advertised in the City of London 10.43% 14.03% 12.82%
Number of daily rates quoted 676 1008 1589
City of London median daily rate £427 £463 £413
Median daily rate % change year-on-year -7.67% +12.12%  
10th Percentile £186 £269 £275
90th Percentile £625 £588 £550
London median daily rate £450 £425 £388
% change year-on-year +5.88% +9.67%  
Number of hourly rates quoted 61 19 43
City of London median hourly rate £24.86 £19.00 £17.98
Median hourly rate % change year-on-year +30.84% +5.67%  
10th Percentile £21.40 £18.05 £14.55
90th Percentile £30.00 £26.00 £32.86
London median hourly rate £24.86 £22.00 £19.00
% change year-on-year +13.00% +15.78%  

PSTN
Job Vacancy Trend in the City of London

Job postings citing PSTN as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for PSTN in the City of London

PSTN
Contractor Daily Rate Trend in the City of London

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

Contractor daily rate trend for PSTN in the City of London

For the 6 months to 29 June 2017, IT contractor jobs citing PSTN 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 City of London region with a requirement for PSTN.

1 4 (100.00%) Cisco
1 4 (100.00%) ISDN
2 2 (50.00%) LAN
2 2 (50.00%) PBX
2 2 (50.00%) VoIP
2 2 (50.00%) WAN
2 2 (50.00%) DHCP
2 2 (50.00%) Ethernet
2 2 (50.00%) TCP/IP
2 2 (50.00%) DNS
2 2 (50.00%) SSL
2 2 (50.00%) ADSL
2 2 (50.00%) Broadband
2 2 (50.00%) Avaya
2 2 (50.00%) Siemens
2 2 (50.00%) MPLS
2 2 (50.00%) ICMP
2 2 (50.00%) X.25
2 2 (50.00%) Firewall
2 2 (50.00%) Wireless
2 2 (50.00%) IPsec
2 2 (50.00%) Telecoms
2 2 (50.00%) Handset
2 2 (50.00%) Mitel
2 2 (50.00%) Fortinet
2 2 (50.00%) NGN
2 2 (50.00%) Load Balancing
2 2 (50.00%) Cisco ASA
2 2 (50.00%) Skype for Business
2 2 (50.00%) F5

PSTN
Co-occurring IT Skills in the City of 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 2 (50.00%) Skype for Business
Communications & Networking
1 4 (100.00%) ISDN
2 2 (50.00%) Cisco ASA
2 2 (50.00%) Cisco Nexus
2 2 (50.00%) DHCP
2 2 (50.00%) DNS
2 2 (50.00%) Ethernet
2 2 (50.00%) Firewall
2 2 (50.00%) HSRP
2 2 (50.00%) ICMP
2 2 (50.00%) IPsec
2 2 (50.00%) LAN
2 2 (50.00%) MPLS
2 2 (50.00%) NGN
2 2 (50.00%) PBX
2 2 (50.00%) SSL
2 2 (50.00%) TCP/IP
2 2 (50.00%) VoIP
2 2 (50.00%) WAN
2 2 (50.00%) Wireless
2 2 (50.00%) X.25
General
1 2 (50.00%) Telecoms
Job Titles
1 2 (50.00%) Cisco Engineer
1 2 (50.00%) Cisco Network Engineer
1 2 (50.00%) Cisco Specialist
1 2 (50.00%) Cisco VoIP Specialist
1 2 (50.00%) Data Centre Engineer
1 2 (50.00%) Mitel Specialist
1 2 (50.00%) Telecoms Specialist
1 2 (50.00%) VoIP Specialist
Libraries, Frameworks & Software Standards
1 2 (50.00%) 802.1X
Miscellaneous
1 2 (50.00%) Data Centre
1 2 (50.00%) Handset
Processes & Methodologies
1 2 (50.00%) High Availability
1 2 (50.00%) Load Balancing
Vendors
1 4 (100.00%) Cisco
2 2 (50.00%) Avaya
2 2 (50.00%) F5
2 2 (50.00%) Fortinet
2 2 (50.00%) Mitel
2 2 (50.00%) Siemens