elin
To create a PSTN number that replaces a 911 caller’s extension, use the elin command in voice emergency response location configuration mode. To remove the number, use the no form of this command.
elin {1 | 2} number
no elin [1 | 2]
Syntax Description
{1 | 2 } |
Number index. |
number |
PSTN number that replaces a 911 caller’s extension. |
Command Default
No replacement number is created.
Command Modes
Voice emergency response location configuration (cfg-emrgncy-resp-location)
Command History
Cisco IOS Release |
Cisco Product |
Modification |
---|---|---|
12.4(15)T |
Cisco Unified CME 4.1 Cisco Unified SRST 4.1 Cisco Unified SIP SRST 4.1 |
This command was introduced. For Cisco Unified CME, this command is supported in SRST fallback mode only. |
12.4(15)XY |
Cisco Unified CME 4.2(1) Cisco Unified SRST 4.2(1) Cisco Unified SIP SRST 4.2(1) |
This command was added for Cisco Unified CME. |
12.4(20)T |
Cisco Unified CME 7.0 Cisco Unified SRST 7.0 Cisco Unified SIP SRST 7.0 |
This command was integrated into Cisco IOS Release 12.4(20)T. |
Usage Guidelines
Use this command to specify an ELIN, a PSTN number that will replace the caller’s extension.
The PSAP will see this number and use it to query the ALI database to locate the caller. The PSAP also uses this command for callbacks.
You can configure a second ELIN using the elin 2 command. If two ELINs are configured, the system selects an ELIN using a round-robin algorithm. If an ELIN is not defined for the ERL, the PSAP sees the original calling number.
Examples
In the following example, all IP phones with the IP address of 10.X.X.X or 192.168.X.X are automatically associated with this ERL. If one of the phones dials 911, its extension is replaced with 408 555-0100 before it goes to the PSAP. The PSAP will see that the caller’s number is 408 555-0100.
voice emergency response location 1
elin 1 4085550100
subnet 10.0.0.0 255.0.0.0
subnet 2 192.168.0.0 255.255.0.0