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SIP trunk with DID Configuration

Shams Rishad
Level 1
Level 1

I'm new to collaboration and have some basic deployment experience with Cisco Telepresence units. Recently, I've started working with Cisco IP Phones and CUCM. I've been able to register phones, create partitions, CSS, and calls are taking place internally. No problem with that.

 

Recently I've been assigned to configure SIP trunk from ITSP at a client's premises. We have 100+ phones, CUCM, ISR 4321 (Voice Gateway/CUBE), and ITSP connection. And this is all new to me. As of now, I have only worked with internal calls and have no experience with these. I've been studying but I'm getting all confused with E1/T1/PSTN/ISDN/POTS/DSL and all these.

 

Client has an ISP connection already, the ITSP service is from a different company and the ITSP provider did not lay any cable from their end. It seems that our CUBE router will connect to the ITSP through the already existing ISP connection.

 

ITSP has provided the following information: 

========================================================

IP Phone No.        Password 

09606950986         6198dtrxAer

09606950987         62crfNXif13

09606950535         2axdCG67N

09606808080         4834s5$F32Z

(IP Phone number/User Name/ PIN are same eg:( 09606950986 )

Software Download link  : http://agni.com/soft_phones.php

Operator code               : 46656

SIP Domain/Server        : iptsp.agni.com  (202.53.163.27)

Codec: alaw/ulaw

Port: 5060

========================================================

 

I've already configured the internal part and everybody's already placing internal calls. But now I have to configure the system with the above information given from ITSP. Can you guys please help me out? Any guideline/videos/resource material will help me.

 

Please note that here ISP is one company (Aamra Technologies) and ITSP is another (Agni Systems). We only have connection from ISP, ITSP didn't provide any physical connection to us. I know I'm talking silly, as I don't quite understand the system right now. I need help.

 

Thanks in advance!

Rishad

2 Replies 2

R0g22
Cisco Employee
Cisco Employee
Seems like you got 4 different trunks each with it's own creds and DID ? Have you talked to your ITSP ? What is the bandwidth for this connection that you have ? Is it symmetric or asymmetric ?

From a document perspective, you can refer below. Ignore the CME. Config is the same -

https://www.cisco.com/c/en/us/support/docs/voice-unified-communications/unified-communications-manager-express/91535-cme-sip-trunking-config.html

If you will indeed have multiple trunks on your router, then you would need to consider multi-tenant to isolate each DID/trunk with it's own authentication. Check below -

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/cube/configuration/cube-book/voi-cube-multi-tenants.html

Hi Nipun

Thanks a lot for your reply. I'm checking the links you provided and let's see how far can I go with configuration.

Rishad