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Cisco 2901 CUBE Router and a 100Mbps SIP Trunk

Does anyone know if the 2901 router set up as a CUBE/voice gateway will work with a SIP trunk running at 100Mbps?

The connection is an ethernet handoff from fiber optic link to the ISP.

I am getting conflicting information from everyone I talk to about this.

Thanks

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Cisco 2901 CUBE Router and a 100Mbps SIP Trunk

2901 will barely support 100 Mbps.  3925 would be your best option.

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Cisco 2901 CUBE Router and a 100Mbps SIP Trunk

Thanks for your reply.

Unfortunately I don't think that is an option.  When we purchased the router we were only going to have 10Mbps connection so that is what the reseller sent us.  We have decided to go to 100Mbps since then and I had already opened and racked up the router so I doubt they will let me return it.

If I am understanding AT&T correctly, there will be a separate connection for the SIP trunk going to the 2901 and another for the internet connection which should just go straight to the ASA5510.

If only the phone traffic would go through the 2901 I doubt it would ever amount to more than 5 or 10Mbps.  So I would think the router could easily handle that or is my logic skewed?

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Hall of Fame Community Legend

Cisco 2901 CUBE Router and a 100Mbps SIP Trunk

If only the phone traffic would go through the 2901 I doubt it would ever amount to more than 5 or 10Mbps.  So I would think the router could easily handle that or is my logic skewed?

Makes sense.  So you are handed a 100 Mbps interface but you only need about 10 Mbps.  Then a 2901 would be suffice.