Services-Telephone Interconnect Systems
11 tracked issuers filing with the SEC under this industry classification.
Issuers
11
Filings
40
SIC Code
7385
Industry Overview
Services-Telephone Interconnect Systems
The Services–Telephone Interconnect Systems industry (SIC 7385) provides design, installation, integration, and ongoing support for business communications infrastructure, including PBX and key systems, VoIP and SIP trunking, unified communications platforms, call-center solutions, and related cabling and networking hardware. Typical customers range from small and midsize businesses to large enterprises, healthcare providers, financial institutions, and government agencies that require secure, reliable voice and data connectivity across multiple locations and remote workforces. Key risks include rapid technology obsolescence, dependence on carrier networks, cyber threats to voice and collaboration platforms, and compliance with FCC rules, privacy laws, 911 and emergency-calling regulations, and sector-specific standards. In 2024–2025, the industry is being reshaped by cloud-based UCaaS, AI-powered contact centers, tighter integration with CRM and collaboration tools, and 5G-enabled, mobile-first architectures. For investors and operators tracking competitive positioning and capital allocation in SIC 7385, you can view live SEC filings and disclosures directly on EarningsFeed.
Source: Earnings Feed research · 11/23/2025
Latest Filings
- 8-K/AOLYMPIC WEDDINGS INTERNATIONAL INC
OLYMPIC WEDDINGS INTERNATIONAL INC 8-K/A
Jul 10, 3:34 PM ET23.4 KB - 10-Q/ATOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 10-Q/A
Mar 2, 4:59 PM ET406.4 KB - 10-Q/ATOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 10-Q/A
Mar 2, 4:58 PM ET352.3 KB - 10-Q/ATOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 10-Q/A
Mar 2, 4:56 PM ET406.3 KB - 10-KTOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 10-K
Mar 2, 4:44 PM ET760.6 KB - 6-KCROW TECHNOLOGIES 1977 LTD
CROW TECHNOLOGIES 1977 LTD 6-K
Nov 21, 7:36 AM ET10.6 KB - 8-KTOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 8-K
Jul 13, 3:07 PM ET65.2 KB - 8-KTOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 8-K
Apr 21, 8:11 AM ET97.8 KB - 3TOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 3
Mar 30, 10:03 AM ET3.2 KB - 10-KTOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 10-K
Mar 3, 2:33 PM ET763.3 KB - SC 13G/ATOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ SC 13G/A
Feb 9, 1:48 PM ET16.8 KB - 4NORSTAN INC
NORSTAN INC 4
Jan 27, 5:28 PM ET8.5 KB - 8-KTOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 8-K
Jan 27, 8:02 AM ET106.8 KB - 4TOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 4
Jan 25, 9:17 AM ET5.3 KB - 4TOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 4
Jan 25, 9:12 AM ET5.3 KB - 4TOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 4
Jan 25, 8:55 AM ET5.5 KB - 4TOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 4
Jan 25, 8:50 AM ET5.5 KB - 4TOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 4
Jan 25, 8:38 AM ET5.5 KB - SC 13G/ATOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ SC 13G/A
Jan 5, 3:43 PM ET5.0 KB - 8-KNORSTAN INC
NORSTAN INC 8-K
Dec 2, 5:04 PM ET23.1 KB - 8-KTOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 8-K
Oct 22, 4:16 PM ET100.5 KB - 8-KTOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 8-K
Oct 21, 7:11 AM ET108.4 KB - 8-KNORSTAN INC
NORSTAN INC 8-K
Oct 18, 5:08 PM ET10.7 KB - 8-KNORSTAN INC
NORSTAN INC 8-K
Sep 21, 5:14 PM ET4.9 KB - 8-KNORSTAN INC
NORSTAN INC 8-K
Sep 7, 5:53 PM ET21.9 KB - 4TOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 4
Aug 9, 3:14 PM ET4.8 KB - 10-QTOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 10-Q
Aug 5, 2:47 PM ET413.0 KB - 8-KTOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 8-K
Aug 5, 2:30 PM ET2.0 MB - SC 13D/ACROW TECHNOLOGIES 1977 LTD
CROW TECHNOLOGIES 1977 LTD SC 13D/A
Aug 5, 12:08 PM ET53.6 KB - 8-KNORSTAN INC
NORSTAN INC 8-K
Jun 17, 4:04 PM ET23.9 KB - 8-KNORSTAN INC
NORSTAN INC 8-K
Jun 1, 7:45 AM ET9.1 KB - 10-KTOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 10-K
Mar 15, 3:38 PM ET364.8 KB - SC 13G/ALEXENT INC
LEXENT INC SC 13G/A
Feb 18, 4:34 PM ET135.9 KB - 6-KCROW TECHNOLOGIES 1977 LTD
CROW TECHNOLOGIES 1977 LTD 6-K
Nov 18, 10:11 AM ET10.3 KB - 8-KLEXENT INC
LEXENT INC 8-K
Nov 17, 1:33 PM ET15.1 KB - SC 13DLEXENT INC
LEXENT INC SC 13D
Nov 17, 12:44 PM ET45.7 KB - 10-QLEXENT INC
LEXENT INC 10-Q
Nov 13, 12:12 PM ET261.2 KB - 4TOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 4
Nov 12, 4:05 PM ET5.3 KB - 8-KLEXENT INC
LEXENT INC 8-K
Nov 12, 1:30 PM ET7.4 KB - 10-QTOLLGRADE COMMUNICATIONS INC \PA\
TOLLGRADE COMMUNICATIONS INC \PA\ 10-Q
Nov 12, 11:35 AM ET132.8 KB
Featured Issuers
11Cornerworld Corp
CIK 0001338242
CROW TECHNOLOGIES 1977 LTD
CIK 0000770320
CTC COMMUNICATIONS CORP
CIK 0000764841
CTC COMMUNICATIONS GROUP INC
CIK 0001092319
LEXENT INC
CIK 0001105503
LINC NET INC
CIK 0001098489
NETLOJIX COMMUNICATIONS INC
CIK 0001005974
NORSTAN INC
CIK 0000072418
SHARED TECHNOLOGIES FAIRCHILD COMMUNICATIONS CORP /DE/
CIK 0001012311
SHARED TECHNOLOGIES FAIRCHILD INC
CIK 0000817632
TOLLGRADE COMMUNICATIONS INC \PA\
CIK 0001002531
Classification
- SIC Code
- 7385
- Total Issuers
- 11
- Recent Filings
- 40