[cisco-voip] Fax topology with ITSP/CUBE and VG310

[daniel at ohnesorge.me]

Sorry I should specify I meant "VG310 in SCCP mode can only support 
NSE-based Modem Passthrough, NSE-based T.38 relay and Cisco Fax Relay".

On 2017-02-15 10:25, daniel at ohnesorge.me wrote:

> Hi All,
> 
> Just wanted to confirm my understanding with regards to which Fax 
> topology to shoose. Some key points:
> 
> - The ITSP network to the customer is over a dedicated WAN link with 
> QoS enabled
> - The ITSP does not support any kind of Fax Relay
> - The ITSP uses G711 ulaw for all calls
> 
> Topology: 
> ITSP---SIP---CUBE---SIP---CUCM---SCCP---VG310---FXS---FAX_Machine
> 
> So the goal here is to ensure reliable fax messaging between CUBE and 
> VG310. From my understanding, VG310 can only support NSE-based Modem 
> Passthrough, NSE-based T.38 relay and Cisco Fax Relay hence I would 
> need to enable the same on CUBE. What would be the best topology to 
> choose in this scenario?
> 
> Appreciate any feedback.
> 
> Thanks,
> Daniel