Inter-Tel Axxess - page 176

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System Features

AXXESS® ADMINISTRATOR’S GUIDE – January 2004

Calling Party Number Field

Each station can be programmed to send an identifying number when a call is placed. The

“Calling Party Number field is located in Devices and Feature Codes - Stations - Individual

Station programming. This information is required for emergency 911 calls in some states. You

can program any number up to 48 digits in the Calling Party Number field. However, check

with your service provider to determine their specific requirements for this field. This number

will be sent in the ISDN setup message in the Calling Party Number Information Element. In

addition, the system will also send the extension number of the station in the Calling Party

Number Subaddress Information Element. The CO should ignore this information element if it

does not support it.

NOTE: There is no default number for this field. It is up to the programmer to supply the correct

Emergency Calling Party Number for each station.

If an off-premises extension is used for dialing 911, the 911 operators will see Calling Party

Number or the address of the location of the system, not the off-premises address. Off-pre-

mises personnel should be prepared to give the correct address and other pertinent information

if it is not programmed as the Calling Party Number.

IP Devices and Local Loop Support

System V7.0 or later supports IP-based solutions for providing local Public Switched Tele-

phone Network (PSTN) connectivity using the IPRC card and a third-party Media Gateway

Control Protocol (MGCP) gateway. The system requires software V7.0 or later and IPRC firm-

ware V1.3 or later. The firmware supports up to 32 IP Phones/SLAs/SoftPhones and Loop

Start Adapters (LSAs). Support for IP-based local loop does not require Premium Features.

Up to 32 ports of an IPRC can be programmed to be loop start adapter ports (MGCP gateway

trunks). The IPRC statically maps Voice over IP resources on a one-to-one, non-blocking basis

for each loop-start port within the MGCP device.

Inter-Tel currently supports the following gateways:

•AudioCodes MP-100 Foreign Exchange Office (FXO) Gateway: Supports up to four

loop start line (FXO) ports.

•AudioCodes MP-104 FXO Gateway: Supports up to four loop start line (FXO) ports.

Although the MP-104 is similar to the MP-100, each gateway uses a different switch

type for configuring the device. The MP-100 uses DIP switches, and the MP-104 uses a

command line switch (-fb). The MP-104 on an IPRC V8.1 firmware supports the peer-

to-peer (P2P) audio feature.

For details on the gateway device, see the latest version of the IP Devices Installation Manual.