Thursday, April 12, 2018

Single-Number voice and fax

My organization has been configured to allow a user to receive faxes and voice calls at their desk number from the outside. However after replacing one of our remote site's router with an ISR4K, and a number of calls with TAC we've been informed that our configuration is no longer supported on the ISR line (using their fax_detect TCL script on the voice gateway). Luckily this only affects the remote site for now, but the remaining sites will be replaced with ISR4ks in the future.

According to my conversations with TAC, using fax on-ramping on the ISR4k line is not supported. My research has pointed back at just setting up dedicated fax numbers and just retraining users, but I'm sure there are avenues I have not explored yet.

Does anyone have their environment configured to allow receiving of faxes and voice calls on end user DIDs, or is this just an unreasonable expectation?

Bonus Info: We have Cisco UCM and an Xmedius Fax server



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