# PIEE #FA4690-26-R-SIP2

Sources Sought: Local SIP Voice Trunk Services for Ellsworth Air Force Base

**Buyer:** FA4690  28 CONS PKC
**Posted:** October 29, 2026
**Respond By:** November 12, 2026
**Identifier:** FA4690-26-R-SIP2
**NAICS:** 517111, 517311

The U.S. Air Force is seeking information on local SIP voice trunk telecommunications services for Ellsworth Air Force Base.
- **Government buyer:** U.S. Air Force, FA4690 28 CONS PKC, supporting Ellsworth Air Force Base in South Dakota.
- **Requested service:** Local SIP voice trunk telecommunications services. No quantities, part numbers, or detailed technical specifications are provided in the notice text.
- **Period of performance:** One base period plus four option years; specific dates and duration of the base period are not stated.
- **OEMs and vendors:** No OEMs, vendors, or service providers are named in the provided materials. Further requirements are referenced in attachments, but no attachments were provided.

### Description

See Attachments.

[View original listing](https://piee.eb.mil/sol/xhtml/unauth/search/oppMgmtLink.xhtml?noticeId=FA4690-26-R-SIP2&noticeType=SourcesSought)