AudioCodes Mediant 3000, User Manual

Page: 766 / 872

User's Manual 766 Document #: LTRT-89729
Mediant 3000
Parameter Description
signal transmission ends, reverse switching from bypass coder
to regular voice coder is performed.

[2] = Relay (signals sent over the EVRC/B or AMR codec) -
TTY phone device transfer using In-Band Relay mode for TTY
signal transport. The following TTY relay standards are
supported:

3GPP2 C.S0014-0-3 and 3GPP2C.s0028-0 v2.0 over
EVRC and EVRC B.

Text over Cellular Text Modem (CTM) over an existing
speech path when using AMR or GSM EFR coders.
Note: To support TTY Relay (2), you must configure the device to
use the EVRC/B, AMR, or GSM EFR coder.
53.11.6 PSTN Parameters
This subsection describes the device's PSTN parameters.
53.11.6.1 General Parameters
The general PSTN parameters are described in the table below.
General PSTN Parameters
Parameter Description
Web/EMS: Protocol Type
[ProtocolType]
Defines the PSTN protocol for all the Trunks. To configure the
protocol type for a specific Trunk, use the
ini file parameter
ProtocolType_x:

[0] NONE

[1] E1 EURO ISDN = ISDN PRI Pan-European (CTR4)
protocol

[2] T1 CAS = Common T1 robbed bits protocols including
E&M wink start, E&M immediate start, E&M delay dial/start
and loop-start and ground start.

[3] T1 RAW CAS

[4] T1 TRANSPARENT = Transparent protocol, where no
signaling is provided by the device. Timeslots 1 to 24 of all
trunks are mapped to DSP channels.

[5] E1 TRANSPARENT 31 = Transparent protocol, where no
signaling is provided by the device. Timeslots 1 to 31 of each
trunk are mapped to DSP channels.

[6] E1 TRANSPARENT 30 = Transparent protocol, where no
signaling is provided by the device. Timeslots 1 to 31,
excluding time slot 16 of all trunks are mapped to DSP
channels.

[7] E1 MFCR2 = Common E1 MFC/R2 CAS protocols
(including line signaling and compelled register signaling).

[8] E1 CAS = Common E1 CAS protocols (including line
signaling and MF/DTMF address transfer).

[9] E1 RAW CAS

[10] T1 NI2 ISDN = National ISDN 2 PRI protocol

[11] T1 4ESS ISDN = ISDN PRI protocol for the