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Multi-Tech Systems Mvp-2400/2410/3010, Mvp-210/410/810 Voice/ip Gateways S000249C User Guide

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    							MultiVOIP User Guide T1 PhoneBook Configuration
    241
    The table below describes all fields in the PhoneBook Configuration
    screen.
    PhoneBook Configuration Parameter Definitions
    Field Name Values Description
    Gateway
    NameY/N This field allows you to specify
    a name for this MultiVOIP.
    When placing a call, this name
    is sent to the remote
    MultiVOIP for display in Call
    Progress listings, Logs, etc.
    Q.931 Parameters
    Use Fast Start Y/N Enables the H.323 Fast Start
    procedure.  May need to be
    enabled/disabled for
    compatibility with third-party
    VOIP gateways.
    Call Signalling
    Portport
    numberDefault: 1720 (H.323)
    GateKeeper RAS Parameters
    IP AddressIP address of the GateKeeper.
    Port Number Well-known port number for
    GateKeepers.
    Must match port number of
    GateKeeper, 1719.
    Gateway
    PrefixThis number becomes
    registered with the
    GateKeeper.  Call requests sent
    to the gatekeeper and
    preceded by this prefix will be
    routed to the VOIP gateway.
    Gatekeeper
    Namealpha-
    numeric
    stringOptional.  The name of the
    GateKeeper with which this
    MultiVOIP is trying to register.
    H.323 ID The H.323 ID is used to
    register this particular
    MultiVOIP with the
    GateKeeper. 
    						
    							E1 Phonebook Configuration MultiVOIP User Guide
    242
      
    PhoneBook Configuration Parameter Definitions
    (cont’d)
    Field Name Values Description
    Proxy Server Parameters
    Enable Proxy Y/N Allows the MultiVOIP to work
    in conjunction with a proxy
    server.
    Proxy Server
    IP Addressn.n.n.n
    where
    n=0-255Network address of the proxy
    server that the voip is using.
    Port Number Logical port number for proxy
    communications.
    H.323 Version 4 Parameters
    Q.931
    Multiplexing
    (Mux)Y/N Signalling for multiple phone
    calls can be carried on a single
    port rather than opening a
    separate signalling port for
    each call.  This conserves
    bandwidth resources.
    H.245
    Tunneling
    (Tun)Y/N H.245 messages are
    encapsulated within the  Q.931
    call signalling channel.
    Among other things, the H.245
    messages let the two endpoints
    tell each other what their
    technical capabilities are and
    determine who, during the
    call, will be the client and who
    the server. Tunneling is the
    process of transmitting these
    H.245 messages through the
    Q.931 channel. The same
    TCP/IP socket (or logical port)
    already being used for the Call
    Signalling Channel is  then also
    used by the H.245 Control
    Channel.  This encapsulation
    reduces the number of logical
    ports (sockets) needed and
    reduces call setup time. 
    						
    							MultiVOIP User Guide T1 PhoneBook Configuration
    243
    PhoneBook Configuration Parameter Definitions
    (cont’d)
    Field Name Values Description
    H.323 Version 4 Parameters
    Parallel H.245
    (FS + Tun)Y/NFS (Fast Start or Fast Connect)
    is a Q.931 feature of H.323v2 to
    hasten call setup as well as
    ‘pre-opening’ the media
    channel before the CONNECT
    message is sent.  This pre-
    opening is a requirement for
    certain billing activities.
    Under Parallel H.245 FS + Tun,
    this Fast Connect feature can
    operate simultaneously with
    H.245 Tunneling (see
    description above).
    Annex –E (AE) Y/NMultiplexed UDP call
    signalling transport.  Annex E
    is helpful for high-volume voip
    system endpoints.  Gateways
    with lesser volume can afford
    to use TCP to establish calls.
    However, for larger volume
    endpoints, the call setup times
    and system resource usage
    under TCP can become
    problematic.  Annex E allows
    endpoints to perform call
    signalling functions under the
    UDP protocol, which involves
    substantially streamlined
    overhead.  (This feature should
    not be used on the public
    Internet because of potential
    problems with security and
    bandwidth usage.) 
    						
    							E1 Phonebook Configuration MultiVOIP User Guide
    244
    2. Select PhoneBook Modify and then select
    Outbound Phone Book/List Entries.
    Click Add. 
    						
    							MultiVOIP User Guide T1 PhoneBook Configuration
    245
    3. The Add/Edit Outbound PhoneBook screen appears.
    Enter Outbound PhoneBook data for your MVP2400/2410.  Note that
    the Advanced button gives access to the Alternate IP Routing feature, if
    needed.  Alternate IP Routing can be implemented in a secondary
    screen (as described after the primary screen field definitions below). 
    						
    							E1 Phonebook Configuration MultiVOIP User Guide
    246
    The fields of the Add/Edit Outbound Phone Book screen are described
    in the table below.      
    Add/Edit Outbound Phone Book: Field Definitions
    Field Name Values Description
    Destination
    Patternprefixes,
    area codes,
    exchanges,
    line
    numbers,
    extensionsDefines the beginning of
    dialing sequences for calls
    that will be connected to
    another VOIP in the system.
    Numbers beginning with
    these sequences are diverted
    from the PTSN and carried
    on Internet or other IP
    network.
    Total Digits as needed number of digits the phone
    user must dial to reach
    specified destination
    Remove Prefix dialed digits portion of dialed number to
    be removed before
    completing call to destination
    Add Prefix dialed digits digits to be added before
    completing call to destination
    IP Address n.n.n.n
    for
    n = 0-255the IP address to which the
    call will be directed if it
    begins with the destination
    pattern given
    Description alpha-
    numericDescribes the facility or
    geographical location at
    which the call will be
    completed.
    Protocol Type SIP or H.323Indicates protocol to be used in
    outbound transmission. 
    						
    							MultiVOIP User Guide T1 PhoneBook Configuration
    247
    Add/Edit Outbound Phone Book: Field Definitions
    (cont’d)
    Field Name Values Description
    H.323 fields
    Use Gatekeepr Y/NIndicates whether or not
    gatekeeper is used.
    H.323 IDThe H.323 ID assigned to the
    destination MultiVOIP.  Only
    valid if “Use Gatekeeper” is
    enabled for this entry.
    Gateway
    PrefixThis number becomes
    registered with the
    GateKeeper.  Call requests
    sent to the gatekeeper and
    preceded by this prefix will
    be routed to the VOIP
    gateway.
    Q.931 Port
    Number1720 Q.931 is the call signalling
    protocol for setup and
    termination of calls (aka ITU-
    T Recommendation I.451).
    H.323 employs only one
    “well-known” port (1720) for
    Q.931 signalling.    If Q.931
    message-oriented signalling
    protocol is used, the port
    number 1720 must be chosen. 
    						
    							E1 Phonebook Configuration MultiVOIP User Guide
    248
     
    Add/Edit Outbound Phone Book: Field Definitions
    (cont’d)
    Field Name Values Description
    SIP Fields
    Use Proxy Y/N Select if proxy server is used.
    Transport
    ProtocolTCP or
    UDPVoip administrator must choose
    between UDP and TCP
    transmission protocols.  UDP is a
    high-speed, low-overhead
    connectionless protocol where
    data is transmitted without
    acknowledgment, guaranteed
    delivery, or guaranteed packet
    sequence integrity. TCP is slower
    connection-oriented protocol
    with greater overhead, but
    having acknowledgment and
    guarantees delivery and packet
    sequence integrity.
    SIP Port
    Number5060 or other
    *See RFC3087
    (“Control of
    Service
    Context using
    SIP Request-
    URI,” by the
    Network
    Working
    Group).
    The SIP Port Number is a
    UDP logical port number.
    The voip will “listen” for SIP
    messages at this logical port.
    If SIP is used, 5060 is the
    default, standard, or “well
    known” port number to be
    used. If 5060 is not used,
    then the port number used is
    that specified in the SIP
    Request URI (Universal
    Resource Identifier).
    SIP URLsip.userphone
    @
    hostserver,
    where
    “userphone”
    is the
    telephone
    number and
    “hostserver”is
    the domain
    name or an
    address on the
    network
    Looking similar to an email
    address, a SIP URL
    identifies a users address.
    In SIP communications, each
    caller or callee is identified
    by a SIP url:
    sip:user_name@host_name.
    The format of a sip url is very
    similar to an email address,
    except that the “sip:“ prefix is
    used. 
    						
    							MultiVOIP User Guide T1 PhoneBook Configuration
    249
    Advanced
    button-- Gives access to secondary
    screen where an Alternate IP
    Route can be specified for
    backup or redundancy of
    signal paths.  See discussion
    on next page.
    Clicking on the Advanced button brings up the Alternate Routing secondary screen.
    This feature provides an alternate path for calls if the primary IP network cannot carry
    the traffic.  Often in cases of failure, call traffic is temporarily diverted into the PSTN.
    However, this feature could also be used to divert traffic to a redundant (backup) unit
    in case one voip unit fails.  The user must specify the IP address of the alternate route
    for each destination pattern entry in the Outbound Phonebook. 
    						
    							E1 Phonebook Configuration MultiVOIP User Guide
    250
    Alternate Routing Field Definitions
    Field
    NameValues Description
    Alternate
    IP
    Addressn.n.n.n
    where
    n= 0-255Alternate destination for outbound data traffic
    in case of excessive delay in data transmission.
    Round
    Trip
    Delaymilliseconds The Round Trip Delay is the criterion for
    judging when a data pathway is considered
    blocked.  When the delay exceeds the
    threshold specified here, the data stream will
    be diverted to the alternate destination
    specified as the Alternate IP Address. 
    						
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