VG310 or 4321 for small office gateway

[Cameron Whitehead]

We are setting up a new small branch office that will be running of a centralized CUCM cluster.  When going to purchase the router we were going to use a 4321 and also get a VG310 as there are a number of analog lines required at this site.  It was then I realized I could get a PRI card on the VG310 and I was wondering is there a reason I wouldn't just use the VG310 (Other than SRST which I do not think a VG310 can do).

[Mohammed al Baqari]

Vg310 is mainly used as fxs hub. Its hardware architecture is made around
this. Software wise its same IOS (it doesn't use ios-xe)

[Jaime Valencia · Accepted solution]

●   The VG310 and VG320 can support foreign exchange office (FXO), foreign exchange station (FXS), T1/E1 Primary Rate Interface (PRI), channel associated signaling (CAS), and Basic Rate Interface (BRI) 2- and 3-port voice interface cards (Cisco VIC2 and VIC3, respectively).

https://www.cisco.com/c/en/us/products/collateral/unified-communications/vg-series-gateways/product_data_sheet09186a00801d87f6.html

https://supportforums.cisco.com/t5/ip-telephony/using-a-vg310-as-a-voice-router-w-pri/td-p/2695629