Multi-Tech Systems Mvp-2400/2410/3010, Mvp-210/410/810 Voice/ip Gateways User Guide

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E1 Parameter Definitions
Field Name Values Description
T1/E1/ISDN E1 European standard.
Long-Haul
ModeY/N In Long-Haul Mode, the
MultiVOIP auto-matically
recovers received signals as low
as –36 dB.  The maximum
reachable length with 22 AWG
cable is 2000 meters.  When
Long-Haul Mode is disabled,
signals as low as –10 dB can be
received.
Default: disabled.
CRC Check
(Cyclic
Redundancy
Check)-- Not applicable to E1.
Frame Format Double Frame;
MultiFrame
(with CRC4);
MultiFrame
(w/CRC4,
modified)Frame Format of MultiVOIP
should match that used by PBX
or telco. 
						

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E1 Parameter Definitions (cont’d)
Field Name Values Description
CAS Protocol E&M Immed Strt
E&M Wink Start
E&M Wink with
dial tone
FXO Ground Strt
FXO Loop Start
FXS Ground Strt
FXS Loop Start
MFR2ITU
MFR2 China
MFR2 ANIChannel Associated Signaling
(CAS) is a method of
incorporating telephony
signaling info into an E1
voice/data stream.  In CAS, the
signaling bits (the A, B, C, and
D bits) are multiplexed into the
signal stream of each E1
channel.  (By contrast, in
Common Channel Signaling
(CCS), one channel handles
signaling for all other channels.)
Each CAS protocol defines the
states of the signaling bits
during the various stages of a
call (IDLE, SEIZED, ANSWER,
RING-ON, RING-OFF).
The CAS protocol code allows
the VOIP to  interact properly
with the PBX or central-office
switch that it serves.  The need
to download CAS protocols
arises for only a small minority
of VOIP users, and only when
PBX/switch is found to be
incompatible with standard
protocols.
Match this parameter to the
setting of PBX or central-office
switch. 
						

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E1 Parameter Definitions (cont’d)
ISDN Parameters
Field Name Values Description
Enable
ISDN-PRIY/N
If digital connection is ISDN-
PRI type, this box should be
checked. When ISDN is
enabled, the “CAS Protocols”
field is grayed out (ISDN has its
own signaling method).
Terminal/
Networkeither
“Terminal” or
“Network”When “Terminal” is selected, it
indicates that the MultiVOIP
should emulate the subscriber
(terminal) side of the digital
connection.  When “Network”
is selected, it indicates that the
MultiVOIP should emulate the
central office (network) side of
the digital connection.
Setting used for MultiVOIP
must be opposite to the setting
used in the PBX.  For example,
if the PBX is set to “Terminal,”
then the MultiVOIP must be set
to “Network.”
Country see table, later
this chapterCountry in which MultiVOIP is
operating with ISDN.
Operator
see table, later
this chapterIndicates phone switch
manufacturer/model or refers
to telco so as to specify the
switching system in question.
ISDN is implemented
somewhat differently in
different switches.
Note on
Country &
Operator
options.__
[ISDN implementation options
are shown, arranged by
country, in a table below – soon
after E1 Parameter Definitions.] 
						

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E1 Parameter Definitions (cont’d)
Field Name Values Description
Line Build Out 0 dB,  -7.5 dB,
-15 dB, -22.5 dBTo reduce the crosstalk on
received signals, a transmit
attenuator can be placed in the
data path.  Transmit attenuation
is selectable.  Default: O dB
Pulse Shape
Level0 to 40 Meters
40 to 81 m
81 to 122 m
122 to 162 m
162 to 200 mRefers to length of cable
between MultiVOIP and
PBX/telco in meters. Most
common will be 0 to 40m.
Clocking External/Internal
Set opposite to telco/PBX
setting.  Example: if telco
clocking internal, set VOIP
clocking as external.
Line Coding AMI / HDB3 Match to PBX or telco.
PCM Law A-Law/Mu-Law Match to PBX or telco.
“A-law” is analog-to-digital
compression/expansion
standard used in Europe.
“Mu-law” is North American
standard. 
						

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10.  Set ISDN Parameters (if applicable).   These parameters are acces-
sible in the T1/E1/ISDN Parameters screen.  If your T1 or E1 phone line
is a Primary Rate Interface ISDN line, enable ISDN-PRI and set it for the
particular implementation of ISDN that your telco uses.  The ISDN
types supported by the digital MultiVOIP units (at press time) are listed
below, organized by country. 
						

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11.  Set SNMP Parameters (Remote Voip Management).  This dialog
box can be reached by pulldown menu, keyboard shortcut, or
sidebar.  To make the MultiVOIP controllable by a remote PC
running the MultiVoipManager software, check the “Enable SNMP
Agent” box on the SNMP Parameters screen.
Accessing “SNMP Parameters”
Pulldown Icon
Shortcut Sidebar
     Ctrl + M 
						

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In each field, enter the values that fit your particular system. 
						

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The SNMP Parameter fields are described in the table below.
SNMP Parameter Definitions
Field Name Values Description
Enable SNMP
AgentY/N Enables the SNMP code in the
firmware of the 
MultiVOIP.  This
must be enabled for the 
MultiVOIP
to communicate with and be
controllable by the
MultiVoipManager software.
Default:  disabled
Trap Manager Parameters
Address 4 places; n.n.n.n
n = 0-255IP address of MultiVoipManager
PC.
Community
Name-- A “community” is a group of VOIP
endpoints that can communicate
with each other.  Often “public” is
used to designate a grouping where
all end users have access to entire
VOIP network.  However, calling
permissions can be configured to
restrict access as needed.
Port Number 162The default port number of the
SNMP manager receiving the traps
is the standard port 162.
Community
Name 1Length = 19
characters (max.)
Case sensitive.First community grouping.
Permissions Read-Only,
Read/WriteIf this community needs to change
MultiVOIP settings, select
Read/Write.  Otherwise, select
Read-Only to view settings.
Community
Name 2Length = 19
characters (max.)
Case sensitive.Second community grouping
Permissions Read-Only,
Read/WriteIf this community needs to change
MultiVOIP settings, select
Read/Write.  Otherwise, select
Read-Only to view settings. 
						

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12. Set Regional Parameters (Phone Signaling Tones & Cadences).
This dialog box can be reached by pulldown menu, keyboard
shortcut, or sidebar.
Accessing “Regional Parameters”
Pulldown Icon
Shortcut Sidebar
     Ctrl + R 
						

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The Regional Parameters screen will appear. For the country selected,
the standard set of frequency pairs will be listed for dial tone, busy
tone, ‘unobtainable’ tone (fast busy or trunk busy), and ring tone.
In each field, enter the values that fit your particular system.