User`s manual

Mediant 1000
H.323 User's Manual 144 Document #: LTRT-83401
Table 5-28: Media Settings, Fax/Modem/CID Parameters (continues on pages 142 to 144)
Parameter Description
Fax Relay ECM Enable
[FaxRelayECMEnable]
Disable [0] = Error Correction Mode (ECM) mode is not used during fax
relay.
Enable [1] = ECM mode is used during fax relay (default).
Fax Relay Max Rate (bps)
[FaxRelayMaxRate]
Maximum rate, in bps, at which fax relay messages are transmitted.
You can select:
2400 [0] = 2.4 kbps.
4800 [1] = 4.8 kbps.
7200 [2] = 7.2 kbps.
9600 [3] = 9.6 kbps.
12000 [4] = 12.0 kbps.
14400 [5] = 14.4 kbps (default).
Fax/Modem Bypass Coder Type
[FaxModemBypassCoderType]
Coder the gateway uses when performing fax/modem bypass. Usually, high-
bit-rate coders such as G.711 should be used.
You can select:
G.711 A-law 64 [0] (default).
G.711 µ-law [1].
Fax/Modem Bypass Packing
Factor
[FaxModemBypassM]
Number of (20 msec) coder payloads that are used to generate a
fax/modem Bypass packet.
The valid range is 1, 2 or 3 coder payloads.
The default value is 1 coder payload.
CNG Detector Mode
[CNGDetectorMode]
[0] = Disable (default). Don’t detect CNG.
[1] = Relay. CNG is detected on the originating side. CNG packets are sent
to the remote side according to T.38 (if IsFaxUsed=1) and the fax session is
started.
[2] = Events Only. CNG is detected on the originating side. The CNG signal
passes transparently to the remote side and fax session is started.
Usually T.38 fax session starts when the ‘preamble’ signal is detected by the
answering side. Some gateways don’t support the detection of this fax
signal on the answering side, thus, for these cases it is possible to configure
the gateways to start the T.38 fax session when the CNG tone is detected
by the originating side. However, this mode is not recommended.