User Manual
H3C VG 10-10/10-11 Voice Gateway
Chapter 4 VG Configuration
4-15
Configurati
on item
Description
Type
Fax mode configuration
T38
Standard T.38 fax protocol
VBD
Fax transparent transmission protocol, which
can interoperate with the mainstream devices
in the industry when the two-party voice
coding/decoding negotiation is configured to
G.711U.
Fax Mode
Config
PCM
Characteristic transparent transmission
protocol supported only by VG series voice
gateways.
Optional
The system selects voice coding/decoding preference
settings from config 1 to config 4 (with the preference
from high to low).
G711A
G.711A rate, with bit rate 64 Kbps.
G711U
G.711U rate, with bit rate 64 Kbps.
G729r8
G.729r8 code, with bit rate 8 Kbps.
G729a
G.729a code, with bit rate 8 Kbps.
G723r6
3
G.723.1 code, with bit rate 6.3 Kbps and
supports VAD function.
G723r5
3
G.723.1 code, with bit rate 5.3 Kbps and
supports VAD function.
Codec
Priority
Config (1 to
4)
No
Choose
Configure no choose for single preference
scheme, meaning this scheme does not
select any coding/decoding.
When setting the four voice coding/decoding
preference scheme to no choose
simultaneously, the system adopts the default
preference order, that is, from high to low,
G729r8 > G711A > G711U > G729a.
Optional
