Nortel VoIP Gateway Configuration Manual page 101

Table 16 H.323 Parameters (Continued)
INI File Field Name
H225DialPort
H245InitTimeOut
RTPMultiplierUsed
EnableReversalPolarity
EnableCurrentDisconnect
TimeForReorderTone
TimeForDialTone
EnableQ931Multiplexing
H323BasePort
SecureCallsFromIP
ChannelSelectMode
Valid Range and Description
H.225 TCP destination port (default 1720)
The VoIP Gateway sends H.225/Setup message to this port
Timeout in seconds for establishment of H.245 connection (Default 30 sec).
0 = The Coder Packetization period in Terminal Capability Set is set to basic
coder period, such as 30 msec for G.723.
1 = The Coder Packetization period in Terminal Capability Set takes into
consideration the Multiplication Factor [M]. For example if M=2, packetization
period of G.729 coder is set to 40 msec (default).
0 = The line polarity is not changed on answer (default)
1 = The VoIP Gateway will change the line polarity on call answer and change it
back on call release.
The VoIP Gateway will send a H.225 CONNECT message on detection of
Polarity reversal signal.
0 - No current disconnect (default)
1 - The VoIP Gateway will generate a "Current disconnect pulse" of 900msec
after a call is released from IP.
Duration of played reorder tone in seconds (default 5 sec).
The tone is played before releasing the VoIP Gateway line.
Duration of played dial tone (default 16 sec),
The dial tone is played at the VoIP Gateway port, after phone is picked up, or
after the VoIP Gateway seizes the line in response to ringing. During play of the
dial tone, the VoIP Gateway waits for DTMF digits. Applicable when "Automatic
dialing" feature is disabled, "IsDialNeeded = 0"
0 = H.323 Q.931 multiplexing is disabled (default)
1 = H.323 Q.931 multiplexing is enabled
When multiplexing is enabled, the VoIP Gateway uses the same socket for all
H.225 messages sent to the same destination.
Starting TCP/UDP transport port for H.225/H.245 messages. The VoIP Gateway
will use dynamic ports (except RTP ports) starting from H323Baseport to
H.323BasePort+500.
For example if H323BasePort = 10000. The VoIP Gateway will use dynamic
ports within the range 10000 to 12000. These ports are used for RAS, H.225 and
H.245 protocols, not including RTP ports.
If not specified, the default port range: 32000 to 65000
0 = Accept all H.323 Calls (default)
1 = Accept H.323 calls only from IP addresses defined in Prefix routing table.
When SecureCalsFromIP is enabled, gateway will reject calls from unknown IP
addresses.
When using a Gatekeeper in routed mode it is recommended to set this
parameter to "0", leaving to the Gatekeeper the decision to accept or reject
H.323 calls.
0 - Select the Gateway port according to the called number.
1 - Select the next available channel in ascending cycle order.
2 - Select the lowest available channel.
3 - Select the next available channel in descending cycle order.
4 - Select the highest available channel.
Note: If several hunt groups are defined, the channel selection mode is applied
individually per hunt group.
Contents of the INI file
Norstar VoIP Gateway Configuration Guide
101