Иманно!! Приведенные тесты 7400 делались на 4.14.. Посему сразу делайте обновление на 4.14k (и проверьте приведенные по ссылке настройки dial peer в Cisco).. С 7200 дело хуже (по причине отличия операционных систем OS100/500/7200 и OS7100/7400), в 500 и 7200 T38 работает только при входящем звонке и приеме факса.. В остальных случаях на 7200 и на 4.14k не ходит (воюем с разработчиками. см. ниже)...
All tests with last MGI16 and v4.14 7100/7400 for H323 and SPNet faxes over VoIP feature is passed with Cisco 5350, 5400 and AddPack VoIP G/W except one case described in P070814002. This issue is correct for OS7100/7400.
And it still troubles with:
OS500 (MCP V2.69, V2.72)+ MGI3 V3.62 or MGI16 V1.20
OS7200 (MCP V4.14, V4.14K)+ MGI V1.14 or MGI16 V1.20
The T38 is working stable with Cisco in one case if it is incoming call and FAX is receiving on OfficeServ extension only..
If it is outgoing call and FAX sending or receiving it is not work correct and stable (with same environment it is work good in OS7100 and 7400.. )..
On my opinion it is not the MGI s/w trouble now. The reason is difference MP operation system in OS500/7200 and OS7100/7400.. The bug can be in the T38 algorithm with OS500/7200, because same MGI cards are working well with T38 in OS7100/7400.
So.. If it is impossible to recheck it in LAB with Cisco 38XX, 53XX, 54XX or Cisco CM, then I am asking first to recheck OS500/7200 + MGI/MGI3/MGI16 with OS7100 or 7400 (due it is work correct)… And first target to find what the difference in T38 operation with correct worked OS7100/7400 in all cases:
A. Fixed G729, G729a, G723.1
B. Autonego from fixed G729, G729a, G723.1 on each of this codec’s (non G711)
1. Incoming call, FAX receiving
2. Incoming call, FAX sending
3. Outgoing call, FAX receiving
4. Outgoing call, FAX sending
P.S. Autonego from fixed non G711 to G711 codec with T38 G711 OFF (trouble ticket P070814002)