ARRIS S34 — Enhanced Upload Availability / Mid-Split Node Verification

Subject: ARRIS S34 — Enhanced Upload Availability / Mid-Split Node Verification

I recently purchased and activated an ARRIS S34 DOCSIS 3.1 modem after an Xfinity representative advised that my service address qualified for enhanced upload speeds of approximately 250 Mbps on my existing 1,200 Mbps plan.

The modem is functioning properly, but my upload speed remains approximately 35–39 Mbps.

My modem diagnostics show:

• Six locked SC-QAM upstream channels

• No OFDMA upstream channel

• Upstream power levels between 37.5 and 40.0 dBmV

• Locked DOCSIS 3.1 OFDM downstream channel

• Normal downstream connectivity

A subsequent telephone representative told me that faster uploads would require replacing the existing coaxial cable with fiber or another type of cable.

My understanding is that Xfinity's mid-split DOCSIS upgrades can provide enhanced upload speeds using existing coaxial cable, provided the serving network equipment has been upgraded.

Could an advanced technical support or network engineering specialist please confirm:

1. Has the node serving my address been upgraded for mid-split / OFDMA upstream service?

2. Does my existing Internet plan qualify for enhanced uploads, and what upload speed is provisioned?

3. Is the correct bootfile assigned to my ARRIS S34?

4. If my node has not been upgraded, is there an estimated upgrade schedule?

I'm seeking a definitive technical answer rather than another basic modem restart procedure.

Please do not change my existing plan or pricing agreement without my authorization.

Thank you.