Networking Diagram

This section describes the networking information about the NEs.

configure the Hybrid microwave links according to the network planning information(as shown in Figure 1):

NE21 to NE24 are RTN 950 NEs.
Each Hybrid microwave link transmits Native E1 services and Native Ethernet services. The AM function is enabled on each link.
To improve transmission reliability of important services, the microwave links between NE21 and NE24 are configured with 1+1 SD protection.

The service capacity accessed by each BTS is provided in Table 1.

**Table 1** Service capacity accessed by each BTS
BTS	BTS21	BTS22	BTS23	BTS24
Number of high-priority E1s	0	2	0	0
Number of low-priority E1s	0	0	0	0
Capacity of high-priority Ethernet services (Mbit/s)	8	4	8	8
Capacity of low-priority Ethernet services (Mbit/s)	10	10	10	10

NOTE:

High-priority services are guaranteed with sufficient transmission resources and are not discarded even in the case of an AM switch. Low-priority services are not guaranteed with sufficient transmission resources and may be discarded in the case of an AM switch. The common service priorities are provided in Table 2.

**Table 2** Common service priorities
Service Type	Service Class
TDM E1s that transmit 2G base station services	High-priority services
ATM E1s (IMA E1s are not used) that transmit 3G base station services	High-priority services
E1s (of a bandwidth not lower than the high-priority service bandwidth) in the IMA E1 group that transmits 3G base station services	High-priority services
Other E1s in the IMA E1 group that transmits 3G base station services	Low-priority services
Voice, signaling, and OM Ethernet services	High-priority services
Streaming media, background, and interactive Ethernet services, for example, Internet services	Low-priority services

Figure 1 Networking diagram (Hybrid radio ring network)

The connections of microwave links shown in Figure 1 are described as follows.

**Table 3** Connections of microwave links (NE21)
Link	Port	Description
Between NE21 and NE22	4-ISU2	Configure this port to receive and transmit radio service signals.
Between NE21 and NE24	3-ISU2(main IF board)	Configure the ports as a 1+1 SD protection group.
Between NE21 and NE24	5-ISU2(standby IF board)	Configure the ports as a 1+1 SD protection group.

**Table 4** Connections of microwave links (NE22)
Link	Port	Description
Between NE22 and NE21	3-ISU2	Configure this port to receive and transmit radio service signals.
Between NE22 and NE23	4-ISU2	Configure this port to receive and transmit radio service signals.

**Table 5** Connections of microwave links (NE23)
Link	Port	Description
Between NE23 and NE22	3-ISU2	Configure this port to receive and transmit radio service signals.
Between NE23 and NE24	4-ISU2	Configure this port to receive and transmit radio service signals.

**Table 6** Connections of microwave links (NE24)
Link	Port	Description
Between NE24 and NE21	4-ISU2(main IF board)	Configure the ports as a 1+1 SD protection group.
Between NE24 and NE21	6-ISU2(standby IF board)	Configure the ports as a 1+1 SD protection group.
Between NE24 and NE21	3-ISU2	Configure this port to receive and transmit radio service signals.