IP Server Interface (IPSI) Board. Avaya IP Telephony

adjust the jitter tolerance (not related to audio jitter) on Cisco switches. The CatOS global command

(which is hidden) is set option debounce enable (disable to undo). This command increases the jitter tolerance to 3.1 nsec from the 1.4-nsec default. The IOS interface command is carrier-delay 4 (no

carrier-delay to undo). This adjusts the carrier transition delay to 4 seconds. If these commands do not correct or improve the flapping condition, put the switch back to its original state and try operating at

10/half until the problem can be resolved.

IP Server Interface (IPSI) Board

The IP Server Interface (IPSI) board is installed in a G650/G600, MCC1, or SCC1 port network, and it is the port network’s interface to communicate with the call server(s). Most of the programming for an IPSI board is done on the SAT ipserver-interface form, which has commands change ipserver-interface #,

display ipserver-interface #, and list ipserver-interface.

If IP Control is ‘y’ the board is acting as an IPSI; otherwise (‘n’) it is acting as a tone clock. The ‘n’ option is primarily used for migrating a non-IPSI port network to an IPSI port network. Ignore

Connectivity in Server Arbitration has to do with whether or not connectivity to this IPSI is factored into the decision to interchange S87xx servers. In most cases this is set to ‘n’, but in rare cases it could be set to ‘y’ for IPSIs in remote locations with poor network connectivity back to the servers. The intent would be to avoid server interchanges caused by frequent and inconsistent loss of communication to this IPSI.

Location is the board slot #. Host is the board’s static IP address if configured manually, or the hostname if the address was obtained via DHCP. DHCP ID is the hostname. Socket Encryption, if the parameter is present, allows the control link between the IPSI and call server to be encrypted. When QoS is enabled the 802.1p and DiffServ parameters contain the values to be applied to the call server when communicating with this IPSI board (values are not applied to the IPSI board itself).

The IPSI’s speed/duplex and L2/L3 priority values are configured on the board itself, instead of via SAT forms. From the IPSI board type ipsilogin at the [IPSI]: prompt, and enter the login name and password to access the [IPADMIN]: prompt. The commands to display and configure the control port speed and duplex are show port 1, set port negotiation 1, set port speed 1, and set port duplex 1. The commands to display and configure the L2 and L3 priority values are show qos, set vlan tag, set vlan priority, and

set diffserv. Be sure to understand what these values do before setting them (see all of section 2.3, particularly the heading “Rules for 802.1p/Q Tagging”).

3.5 General IP-Telephony-Related Configurations (SAT Forms)

The SAT interface has various “forms” that are used to configure specific features. This section covers the forms used to configure general IP telephony. Most of the forms have a display option to view the current configurations, and a change option to change them. Some also have a list option to view, for example, a broad list of stations without seeing in detail how each station is configured. ethernet-options

As of Avaya Communication Manager 2.0 each IP board’s speed and duplex settings are configured using the ip-interface form. The ethernet-options form has the list and get options to verify actual speed/duplex settings against configured settings for all boards and individual boards respectively. With each new system or IP board installation, one standard procedure should be to apply matching speed/duplex settings to each IP board and its corresponding Ethernet switch port. node-names ip

Options are change and display. This form is used to define arbitrary names and associate an IP address with each name. For example, the name “c-lan_80” could be defined to describe a C-LAN board on the

80 subnet with address 192.168.80.10, and the name “medpro_80” could be defined to describe a MedPro board on the 80 subnet with address 192.168.80.11.

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