AudioCodes Mediant 1000B - Page 461

Version 7.2 461 Mediant 1000B Gateway & E-SBC
User's Manual 20. Coders and Profiles
Tel Profile Parameter Global Parameter

If the coder lists of both the IP Profile and Tel Profile apply to
the same call, only the coders common to both are used. The
order of the coders is determined by the preference.
Fax Signaling Method
fax-sig-method
[TelProfile_IsFaxUsed]
Defines the SIP signaling method for establishing and
transmitting a fax session when the device detects a fax.
 [0] No Fax = (Default) No fax negotiation using SIP signaling.
The fax transport method is according to the
FaxTransportMode parameter.
 [1] T.38 Relay = Initiates T.38 fax relay.
 [2] G.711 Transport = Initiates fax/modem using the coder
G.711 A-law/Mu-law with adaptations (see Note below).
 [3] Fax Fallback = Initiates T.38 fax relay. If the T.38
negotiation fails, the device re-
initiates a fax session using the
coder G.711 A-law/Mu-law with adaptations (see the Note
below).
Note:
 Fax adaptations (for options 2 and 3):

Echo Canceller = On

Silence Compression = Off

Echo Canceller Non-Linear Processor Mode = Off

Dynamic Jitter Buffer Minimum Delay = 40

Dynamic Jitter Buffer Optimization Factor = 13
 If the device initiates a fax session using G.711 (option 2 or
3), a 'gpmd' attribute is added to the SDP in the following
format:

For A-law: 'a=gpmd:8 vbd=yes;ecan=on'

For Mu-law: 'a=gpmd:0 vbd=yes;ecan=on'
 When the parameter is set to 1, 2, or 3, the parameter
FaxTransportMode is ignored.
 When the parameter is set to 0, T.38 might still be used
without the control protocol's involvement. To completely
disable T.38, set FaxTransportMode to a value other than 1.
 For more information on fax transport methods, see
''Fax/Modem Transport Modes'' on page 189.
 The corresponding global parameter is IsFaxUsed.
Enable Digit Delivery
digit-delivery
[TelProfile_EnableDigitDelivery]
Enables the Digit Delivery feature, which sends DTMF digits of
the called number to the device's port (analog)/B-channel
(digital) (phone line) after the call is answered (i.e., line is off-
hooked for FXS, or seized for FXO) for IP-to-Tel calls.
 [0] Disable (default)
 [1] Enable
Digital interfaces: If the called number in IP-to-Tel call includes
the characters 'w' or 'p', the device places a call with the first part
of the called number (before 'w' or 'p') and plays DTMF digits
after the call is answered. If the character 'w' is used, the device
waits for detection of a dial tone before it starts playing DTMF
digits. For example, if the called number is '1007766p100', the
device places a call with 1007766 as the destination number,
then after the call is answered it waits 1.5 seconds ('p') and plays
the rest of the number (100) as DTMF digits.
Additional examples: 1664wpp102, 66644ppp503, and