McDewey

CSCdu62269 CSCdu62269 Any Cisco gateway device that initiates a fax relay call (with RTP packets with payload type 96) to a WS-X4604- GW in gateway mode fails. This has been resolved in 12.1.5YF3. When set to gateway mode, the software now identifies payload type 96 and initiates a pass-through mode. CSCdv08143 Fax transmissions of 5-30 pages fail with fax pass- through mode from the VG248 to the WS-X4604- GW in gateway mode. This failure only occurs with software image 12.1.5YF2 on the WS-X4604-GW. To avoid this error, use 12.1.5YF1, 12.1.5YF3, or later. CSCdv83401 CSCdv83337 On Cisco Catalyst 6000 switches, when a fax or modem tone is detected, the call is switched into fax pass-through mode with 10ms (134 byte) packets. Frame size in fax pass-through mode is 214 bytes. Faxes do not fail even though the packet size is incorrect. CSCdw07735 Fax transmissions fail with fax pass-through mode from the WS- X4604/VIC-2FXS (only) to the WS-X6624-FXS gateway with Cisco CallManager 3-1-2c_spA load A00203010026. The WS-X4604 / VIC-2FXS exhibits this in both gateway and toll-by-pass modes. This failure occurs with software images 12.1.5YF2 and 12.1.5YF3 on the WS-X4604-GW, and is fixed in 12.2(7)X software. CSCdw07804 Fax transmissions fail with fax pass-through mode from the WS- C4224V / VIC-2FXS (only) to the WS-X6624- FXS gateway with Cisco CallManager 3-1-2c_spA load A00203010026. This failure occurs with software images 12.1.5YE2 and 12.1.5YE4 on the WS-C4224V and are fixed in 12.2(7)X software. Use search tools to look for known fax problems in the Cisco IOS Software release where the problem occurs. In the previous step, searches were made for a specific fax brand to identify a known issue between a certain fax brand and the Cisco fax relay code. The next step is to perform a generic search because •