SIP and multiple phone numbers

[t-peroutka]

My customer has 20 locations with 20 different phone numbers (SIP accounts) and wants to dial into PSTN via one SIP gateway that is connected to one SIP provider with one SIP realm. Now the provider wants an authentication for outgoing calls that matches each location/ account. But on a Cisco Gateway, I can configure just one authentification per realm:

sip-ua

credentials username 089xxxx password 7 <removed> realm name.provider.net

credentials username 0211xxxx password 7 <removed> realm name.provider.net

credentials username 040xxxx password 7 <removed> realm name.provider.net

authentication username 089xxxx password 7 <removed> realm name.provider.net

registrar dns: name.provider.net expires 3600

host-registrar

Any idea, how to send an authentication per account within one realm? Or any other way to solve the problem?

Thanks,

Thomas

[dsobrinho · Accepted solution]

Hi Thomas,

As mentioned in the Cisco Documment:

Note Multiple realms can be configured per adjacency and there is no limit on the number of these realms aside from memory availability. Different realms may be configured with the same username and password. Also, each realm may be configured with different username and password on different adjacencies. However, any realm can be configured a maximum of one time per adjacency.

Check this documment:

http://www.cisco.com/c/en/us/td/docs/routers/asr1000/configuration/guide/sbcu/2_xe/sbcu_2_xe_book/sbc_sot.html

Find the topic <SIP Outbound Authentication>

Best regards,

Daniel

[t-peroutka]

Hello Daniel,

thanks for your reply. Our problem is, that we do have only one realm and need multiple authentications. Your Link would solve our problem, but it works only on an ASR1000, right? Unfortunately, we do have only an ISR4300 for the customer. Any ideas with that router family?

Thanks,

Thomas