10.4.10 |
ISDN parameters |
| The Reference Clock synchronizes procedures across trunks within a given network or CO. Specific trunks are selected and used by the communication system as points of reference for the clock. Under most circumstances, you will not have occasion to change the reference trunk assignments. However, if the reference clock trunk is missing or malfunctions, then you must assign the reference clock to one or more other trunks using the ISDN parameters. |
10.4.10.1 |
Clock tables |
| Normally, the communication system automatically selects the trunk to be used as a reference for all of the communication systems within a given network or CO. The communication system chooses the trunks in the order of preference shown below: |
| a) | PRI/S2M CO trunk |
| b) | BRI/S0 CO trunk |
| c) | PRI/S2M tie trunk (only slave configuration) |
| d) | BRI/S0 tie trunk. |
| To override this selection order, you complete the Allowed Nos. List and Denied Nos. List accordingly. The automatic search for the reference clock source can be controlled so that the priority for the search is as shown below. |
| a) | Allowed Nos. List |
| b) | PRI/S2M CO trunk |
| c) | BRI/S0 CO trunk |
| d) | PRI/S2M tie trunk (only slave configuration) |
| e) | BRI/S0 tie trunk. |
| To add trunks to the Allowed or Denied Nos. Lists, use the respective lists. When you add trunks to these lists, the communication system first searches for the reference clock trunk in the Allowed Nos. List. The trunks in this list override the communication system's automatic choices. Trunks on the Denied Nos. List are considered ineligible and are disregarded. |
Position |
| Positions 1-4 reflect the priorities 1-4 (for the Allowed nos. list) and 1-16 (for the Denied nos. list). |
Allowed Nos. List |
| The Allowed Nos. List contains the preferred ISDN ports for reference clock allocation. |
Denied Nos. List |
| The Denied Nos. List contains the ISDN ports which should mot be used for reference clock allocation. |
10.4.10.2 |
Area: USBS |
| The USBS feature makes it possible to transfer messages between telephones (USBS=User to User Signaling Bearer Service). |
| The max. transfer rate on the interface is defined by the parameters as follows: |
| Transfer rate in receive direction (application > system) |
| Per time interval (adjustable using the USBS timer interval), the maximum transfer rate is: |
| |
| - | X = Initializing value of packet counter, burst parameter |
| - | Y = Max. number of packets per time interval, replenishment parameter |
| - | P(t-1) = Number of packets received in last time interval |
| Transfer rate in transmit direction (system -> application) |
| Per time interval (fixed at 10 seconds), the maximum transfer rate is: |
| |
| Reference: ETS 300 716 User Signalling Bearer Service Annex A |
x and y parameters |
| The designation is an ETSI standard (ETS 300 716). |
| These parameters can be used to limit the data transfer rate in the D channel. This is necessary to distribute the limited transmission capacity on the respective interface or on a board. |
| The following values are recommended for the reliable functioning of the interface and, as a rule, should not be increased: |
| |
Internal call number DID call number |
| The call number over which a connected PC application reaches the USBS access in the communication system, either internally or externally, is entered here. |
10.4.10.3 |
Area: National/international prefix |
| The appropriate national/international code for the prefix numbers is entered here and is used to prepare the call for ISDN traffic. |
10.4.10.4 |
MSN assignment to lines table |
| This is for the assignment of ports to MSN (Multiple Subscriber Number) for call forwarding in the central office where there are several PMP lines (PMP = Point to Multi Point). The multiple call number feature makes it possible to assign several call numbers to one basic public access. |
| An MSN with up to 11 digits can be entered as the DID number for each station in the communication system. The entry of the assignment must agree with the entry under Settings | Lines/networkingSettings | Set up station and the MSN's must be assigned in the DID table (see ). |
MSN column |
| The MSN for the respective line is assigned here. |
Trunks column |
| The line to be configured in selected in line list. |
|
10.4.10.5 |
Area: UUS |
| The access number that starts the UUS service (UUS: User to User Signaling) of the communication system is defined in the"Dial-in number" input field. If the UUS service has been started, the name and phone number of the calling party is entered in the UUI element (User to User Information). This enables the name and phone number of the calling party to be shown on the display of the called party within an ISDN network of communication systems. |
| The behavior when call forwarding is enabled is described in the HiPath 3000/5000 Feature Description. |
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| HiPath 3000/5000 V9, Manager E, Administrator Documentation, Issue 10 | up  |
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| Disclaimer & Copyright | ID: P31003H3590M1000176A9 | 2014-03-03 |
