Shanghai New Rock Technologies Inc. Page62/75Figure 2-29 Configuration interface of tie trunkClick “Add” to add the devices.Table 2-30 Configuration parameter of tie trunkName DescriptionIP address Enter the IP address of this OM tie trunk.Prefix Extension numbers are required to plan overall when the tie trunk isused. An extension prefix is the prefix part of an extension number, andeach OM has a unique extension prefix; a number created like this isunique in the whole network; an extension prefix can not be “0” or usedas an added dial of outbound call or front desk.Area code An area code is the regional code of fixed-line telephone network in aplace where OM is located; for example, “021”is the zip code inShanghai.Pilot number Trunk numbers are external numbers of the OM (such as operatornumber)Figure 2-30 Reference Tie Trunk DiagramExplanation:1) Dial “323” directly if the extension 201 in Shanghai is used to dial the extension 323 inShenzhen.2) Dial “010-52452345”directly if the extension 201 in Shanghai is used to dial the urban phonenumber 010-52452345 in Beijing.
