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New Member

modem transfer rate on FXS port

Could you give me the maximum transfer rate possible with modem connecting to an FXS port on a VG200?

(Network layout: E1, CallManager)

Thanks

3 REPLIES
New Member

Re: modem transfer rate on FXS port

As far as I know, the maximum transfer rate is 9600bps.

New Member

Re: modem transfer rate on FXS port

Hi,

Do you have any Cisco reference documentation that agree your response.

I have seen documentation: "enhancement of IOS 12.2T" a modem passthrough function that allow 33,6 kbps.

Thanks

Claude

New Member

Re: modem transfer rate on FXS port

I have tryed 56k modem connection trough ATA-186 in standard configuration; modem could connect only at 14.400, unfortunetaly real transfer speed was about 500 bytes per second.

If you don't have modem passthrough feature, try to configure some parameters on voice port. Use G711 codec, disable echo cancellation, disable comfort noise generation, disable voice activity detection, set playout-delay to 200ms and make sure you have correctly configured QoS on IP network between voice gateways which modem call goes through.

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