This article relates to the Cisco TelePresence ISDN GW 3241 and Cisco TelePresence ISDN GW MSE 8321 products.
A. The Codian ISDN Gateway does not transcode out-of-band DTMF to in-band DTMF for video calls.
ISDN Gateway versions prior to the 1.4 release advertised out-of-band DTMF for video calls; with this software version most IP endpoints chose to use out-of-band DTMF in preference to in-band DTMF and therefore DTMF would work with the ISDN Gateway's auto-attendant but would not be detected by endpoints on the ISDN side of the network.
Upgrading to 1.4 or above will stop the ISDN Gateway advertising out-of-band DTMF for video calls; IP endpoints will have to use in-band DTMF, which the ISDN GW will forward to the ISDN endpoint.
Revision | Publish Date | Comments |
---|---|---|
1.0 |
23-Apr-2015 |
Initial Release |