Can I run VoIP phone through SB6121 modem?

My cable provider has installed a separate RCA DHG536 modem for my VoIP phone service alongside my SB5120 modem, and charges me $7 a month modem rental. I am upgrading the SB5120 to a DOC 3.0 modem and wonder if I can abandon the DHG536 modem?

Discussion is locked
Reply to: Can I run VoIP phone through SB6121 modem?
PLEASE NOTE: Do not post advertisements, offensive materials, profanity, or personal attacks. Please remember to be considerate of other members. If you are new to the CNET Forums, please read our CNET Forums FAQ. All submitted content is subject to our Terms of Use.
Reporting: Can I run VoIP phone through SB6121 modem?
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.
- Collapse -
Clarification Request
VoIP Modems

The DHG536 (with VoIP) and SB51209 (without VoIP) are both cable modems...are your sure they are working alongside each other? That doesn't seem right. It would seem that your provider should have replaced the SB5120 with the DHG536.

In any case, the SB6121 is not a VoIP modem. You would need something like the SBV6220. You should first check with your ISP on which VoIP modems are compatible with your service.

- Collapse -
Thanks, Sunwatcher!

Installer used a splitter ahead of the SB5120 to do the phone set up, and the outputs from the DHG536 are phone only; basically leaving the 5120 to function as internet only.

I will look into the SBV6220 as a way to shave costs. Many thanks!

CNET Forums