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OSN 500 550 580 V100R008C50 Commissioning and Configuration Guide 02

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Configuring Z Interface Extension Services

Configuring Z Interface Extension Services

This section describes how to configure Z interface extension services. In Z interface extension services, a foreign exchange station (FXS) port and a foreign exchange office (FXO) port are used in pairs to transparently transmit telephone data.

Networking Diagram

In private network applications, an analogue telephone connected to a private branch exchange (PBX) sometimes needs to be extended to another place without changing the accounting mode. This requirement can be well addressed by Z interface extension services.

Telephones can be directly connected to a PBX. OptiX OSN equipment with FXS and FXO ports can be deployed between the telephones and the PBX to extend telephone lines. Each voice service occupies one 64 kbit/s channel of an E1 and services from two telephones need to be received/transmitted. Figure 2-24 shows the networking diagram for Z interface extension services.

Figure 2-24  Networking diagram for Z interface extension services

NOTE:

This topic considers the OptiX OSN 580 as an example to describe the board layout. In the case of other products, the configuration method is the same, except for the slots. For the slot information, see the Hardware Description of the relevant product.

Service Planning

This section describes the parameters required for configuring Z interface extension services.

Two telephones are connected to each of NE 1 and NE 2. Each of NE 1 and NE 2 requires two 64 kbit/s service channels. Table 2-12 provides the timeslot allocation of a 64 kbit/s service channel.

Table 2-12  Timeslot allocation of a 64 kbit/s service channel
NE Board Source E1 Source Timeslot Range Sink E1 Sink Timeslot Range
NE1 5-FXSO12 DDN-1 1 2M-1(SDH_TU-65) 1
DDN-2 1 2M-2(SDH_TU-66) 1
NE2 5-FXSO12 DDN-1 1 2M-1(SDH_TU-65) 1
DDN-2 1 2M-2(SDH_TU-66) 1
  • The Z interface extension services occupy the SDH_TU-65 and SDH_TU-66 channels during the transmission at the PCM port side.
  • The Z interface extension services occupy the first VC-12 timeslot in the first VC-4 (VC4-1:VC12-1) and the second VC-12 timeslot in the first VC-4 (VC4-1:VC12-2) on the SDH link between NE 1 and NE 2 during the transmission at the SDH network side.
Table 2-13  Port management parameters
Parameter NE1 NE2
Board 5-FXSO12 5-FXSO12
Port 5-FXSO12-1(DDN-1), 5-FXSO12-2(DDN-2) 5-FXSO12-1(DDN-1), 5-FXSO12-2(DDN-2)
Port Type FXS FXO
A/μ Law A law A law
Service Type Z interface extension service N/A
Other parameters Default values Default values
Table 2-14  64 kbit/s service parameters
Parameter NE1 NE2
Board 5-FXSO12 5-FXSO12
Direction Bidirectional Bidirectional Bidirectional Bidirectional
Source E1 DDN-1 DDN-2 DDN-1 DDN-2
Source Timeslot Range (e.g. 1, 3-6) 1 1 1 1
Sink E1 2M-1 (SDH_TU-65) 2M-2 (SDH_TU-66) 2M-1 (SDH_TU-65) 2M-2 (SDH_TU-66)
Sink Timeslot Range (e.g. 1, 3-6) 1 1 1 1
Bandwidth 1 1 1 1
Table 2-15  SDH service parameters
Parameter NE1 NE2
Level VC12 VC12
Direction Bidirectional Bidirectional
Source Slot 5-FXSO12 5-FXSO12
Source VC4 - -
Source Timeslot Range (e.g. 1, 3-6) 65-66 65-66
Sink Slot 4-SL41O-1(SDH-1) 4-SL41O-1(SDH-1)
Sink VC4 VC4-1 VC4-1
Sink Timeslot Range (e.g. 1, 3-6) 1-2 1-2

Configuration Procedure

This section describes the procedure for configuring Z interface extension services.

Prerequisites

Procedure

  1. Configure a pulse code modulation (PCM) service on NE 1.
    1. Configure the attributes of ports for receiving and transmitting PCM services in the NE Explore.

      NOTE:

      In this example, retain the default values for the other parameters in the Port Management window. On live networks, set these parameters according to the network plan. For details about the parameters, see Port Management Parameters.

    2. Configure a 64 kbit/s service.

      Configure a 64 kbit/s service on port DDN-2 by following instructions in 1.b.

    3. Configure the cross-connection between the PCM service and an SDH link.

  2. Configure a PCM service on NE2 according to the service plan by following instructions in 1.
  3. Check whether the service is correctly configured by following instructions in Testing Z Interface Extension Services.
  4. Enable the performance monitoring function for the NEs by following instructions in Enabling NE Performance Monitoring.
  5. Back up the configuration data of the NEs by following instructions in Backing Up the NE Configuration Data to the SCC Board.
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Updated: 2019-01-21

Document ID: EDOC1100020976

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