Cisco VG224 - Maximum Analog Phones Per Port?

[Kirill Klimakhin]

Hi everyone!

I have a client who is looking to hang several analog devices off of each port in a VG224... does anyone know what the limitation is? I fear that it will not have enough ring voltage.

Thanks!          

[Chris Deren]

FXS Analog Voice Port Maximum Distance

The maximum distance is established by a total allowable loop resistance, including the phone or terminal equipment, of 600 ohms.

good post:

https://supportforums.cisco.com/thread/2077312

HTH,

Chris

[acampbell]

Hi,

I think you are looking to find what Ringer Equivelance REN) the ports on the VG224 supports

FRom:-

http://www.cisco.com/en/US/docs/routers/access/vg224/hardware/installation/rcsi/vg224rcs.html

"NOTICE: The Ringer Equivalence Number (REN) for this terminal equipment is 1. The REN assigned to each terminal equipment provides an indication of the maximum number of terminals allowed to be connected to a telephone interface. The termination on an interface may consist of any combination of devices subject only to the requirement that the sum of the Ringer Equivalence Numbers of all the devices does not exceed five."

You will need to find the REN value from your phone/fax/modem spec and calculate whether you will go above 5

More info on REN

http://en.wikipedia.org/wiki/Ringer_equivalence_number

Regards,
Alex.
Please rate useful posts.

[Kirill Klimakhin]

Thank you for the information, so from what I understand, each FXS port supports any combination of analog devices as long as REN does not exceed 5. Correct?

Thanks!

[Kirill Klimakhin]

I was not asking about distance, rather I was the maximum amount of analog devices allowed per FXS port.