Businesses can rely on state-of-the-art technology to support specific business needs with tw telecom Voice T1 services.

tw telecom’s Voice T1 services provide access to the Public Switched Telephone Network (PSTN) through reliable, state-of-the-art switches that will serve your business needs into the future.
Voice T1 is installed in 24 channel increments and connects your digital PBX or key system to tw telecom’s national fiber network. Depending on your requirements Voice T1 can be provisioned with ISDN or non-ISDN digital signaling and configured as inward, outward, or two-way service.

Read more about Voice T1 Services.