Cisco TelePresence SX20 Codec Reference Manual page 39

Cisco TelePresence SX20 Codec
Contents Introduction
xConfiguration H323 Profile [1..1] CallSetup Mode
The H.323 Call Setup Mode defines whether to use a Gatekeeper or Direct calling when establishing
H323 calls.
NOTE: Direct H.323 calls can be made even though the H.323 Call Setup Mode is set to
Gatekeeper.
Requires user role: ADMIN
Value space: <Direct/Gatekeeper>
Direct: An IP address must be used when dialing in order to make the H323 call.
Gatekeeper: The system will use a Gatekeeper to make a H.323 call. When selecting this option
the H323 Profile Gatekeeper Address and H323 Profile Gatekeeper Discovery settings must also
be configured.
Example: xConfiguration H323 Profile 1 CallSetup Mode: Gatekeeper
xConfiguration H323 Profile [1..1] Gatekeeper Discovery
Determine how the system shall register to a H.323 Gatekeeper.
Requires user role: ADMIN
Value space: <Manual/Auto>
Manual: The system will use a specific Gatekeeper identified by the Gatekeeper's IP address.
Auto: The system will automatically try to register to any available Gatekeeper. If a Gatekeeper
responds to the request sent from the codec within 30 seconds this specific Gatekeeper will
be used. This requires that the Gatekeeper is in auto discovery mode as well. If no Gatekeeper
responds, the system will not use a Gatekeeper for making H.323 calls and hence an IP address
must be specified manually.
Example: xConfiguration H323 Profile 1 Gatekeeper Discovery: Manual
xConfiguration H323 Profile [1..1] Gatekeeper Address
Enter the IP address of the Gatekeeper. NOTE: Requires the H.323 Call Setup Mode to be set to
Gatekeeper and the Gatekeeper Discovery to be set to Manual.
Requires user role: ADMIN
Value space: <S: 0, 255>
Format: A valid IPv4 address, IPv6 address or DNS name.
Example: xConfiguration H323 Profile 1 Gatekeeper Address: "192.0.2.0"
SX20 Codec API Reference Guide TC6.2, JULY 2013.
D14949.04
About the API xConfiguration xConfiguration
xConfiguration H323 Profile [1..1] H323Alias E164
xConfiguration H323 Profile [1..1] H323Alias ID
xConfiguration H323 Profile [1..1] PortAllocation
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xCommand
The H.323 Alias E.164 defines the address of the system, according to the numbering plan
implemented in the H.323 Gatekeeper. The E.164 alias is equivalent to a telephone number,
sometimes combined with access codes.
Requires user role: ADMIN
Value space: <S: 0, 30>
Format: Compact string with a maximum of 30 characters. Valid characters are 0-9, * and #.
Example: xConfiguration H323 Profile 1 H323Alias E164: "90550092"
Lets you specify the H.323 Alias ID which is used to address the system on a H.323 Gatekeeper and
will be displayed in the call lists. Example: "firstname.lastname@company.com", "My H.323 Alias
ID"
Requires user role: ADMIN
Value space: <S: 0, 49>
Format: String with a maximum of 49 characters.
Example: xConfiguration H323 Profile 1 H323Alias ID: "firstname.lastname@company.com"
The H.323 Port Allocation setting affects the H.245 port numbers used for H.323 call signalling.
Requires user role: ADMIN
Value space: <Dynamic/Static>
Dynamic: The system will allocate which ports to use when opening a TCP connection. The reason
for doing this is to avoid using the same ports for subsequent calls, as some firewalls consider this
as a sign of attack. When Dynamic is selected, the H.323 ports used are from 11000 to 20999.
Once 20999 is reached they restart again at 11000. For RTP and RTCP media data, the system
is using UDP ports in the range 2326 to 2487. Each media channel is using two adjacent ports,
ie 2330 and 2331 for RTP and RTCP respectively. The ports are automatically selected by the
system within the given range. Firewall administrators should not try to deduce which ports are
used when, as the allocation schema within the mentioned range may change without any further
notice.
Static: When set to Static the ports are given within a static predefined range [5555-6555].
Example: xConfiguration H323 Profile 1 PortAllocation: Dynamic
API Reference Guide
xStatus Appendices
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