When the U1981 interworks with the SE1000, can four SIP trunks be configured?

Two methods are available: 1. Using commands: config add peercomponent domainname U1911 ip 192.168.0.52 tkcnum 256 //Add a SIP peer device. config protocol sip officeno 4 domainname U1911 peerport 5060 maxcallnum 31 //Configure the SIP protocol. Run the preceding commands on both the local and peer U1911s. Note that the local U1911 IP address needs to be configured on the peer U1911 and the peer U1911 IP address needs to be configured on the local U1911. 2. Using the LMT or web management system For details, see the product documentation of the corresponding version.

U19 series unified gateway do not support password authentication for SIP trunk.

On one U1900, one prefix may conflict with another conflict. However, the same prefix can be configured on different U1900s without causing prefix conflict.

The FXO port of the OSU board on the U1900 is used for connecting to the AT0 trunk. Note: The U1980 does not have a port for directly interconnecting with the AT0 trunk. The AT0 trunk can connect to the U1980 through the IAD.

When U1900 or SoftCo users make outgoing calls through a trunk, the call duration cannot be restricted on the trunk. You can run the following commands to modify the service rights for users one by one or in batches to restrict the duration of a single call with external users. 1. To add the outgoing call duration restriction service right, run the following command: config modify subscriber dn [subpbxno <0-251>] [callertimelimit <0-300>] [calledtimelimit <0-300>] [number <>] Parameters of the outgoing call duration restriction service: dn: User number subpbxno: PBX number. The default value is 0. callertimelimit: Call duration when the user is the calling party, in minutes. calledtimelimit: Call duration when the user is the called party, in minutes. number: Quantity of user numbers to have the service modified in batches. Note: To view the restriction on the call duration, run the show subscriber command. If only the call duration restriction for the calling party is configured, the outgoing call duration is restricted only when the user is the calling user. If only the call duration restriction for the called party is configured, the call duration is restricted only when the user is the called user. If the call duration restrictions for both the calling and called parties are configured, the call duration is restricted regardless of whether the user is the calling or called user.