SL2100 Intermedia SIP Trunk Configuration
SL2100 Intermedia SIP Trunk Configuration
This Tech Tip will demonstrate all of the program settings needed to work with Intermedia SIP Trunks. This tip applies to the NEC SL2100 Only.
Get Connected
This Tech Tip requires access to the phone system using NEC PCPro Programming Software. To download the latest version of PCPro or for instructions on how to connect your computer to the phone system, please read the following: How to Connect to the NEC SL2100 or SL1100 Phone System for Programming.
PCPro Programming Steps
Use the program settings below to configure Intermedia SIP Trunks with the NEC SL2100 phone system.
Program 10-12: CPU Network Setup
| 01 – IP Address | 192.168.0.10 |
| 02 – Subnet Mask | 255.255.255.0 |
| 03 – Default Gateway | 0.0.0.0 |
| 04 – Time Zone | (GMT -05:00) Eastern Time |
| 05 – NIC Setting | Automatic detection |
| 06 – NAPT Router IP Address | 0.0.0.0 (Use www.ipchicken.com to find it) |
| 07 – ICMP Redirect | 0 |
| 08 – VOIPDB IP Address | 172.16.0.10 |
| 10 – VOIPDB Subnet Mask | 255.255.255.0 |
| 11 – VOIPDB NIC Setting | Automatic detection |
Program 84-26: VOIPDB Basic Setup (DSP)
| 01 – VOIPDB DSP IP Address | 192.168.0.10 |
| 02 – RTP Port | 255.255.255.0 |
| 03 – RTCP Port | 0.0.0.0 |
Port Forwarding
Please consult with the on-site IT personnel for this portion.
You will now need to forward ports in the clients Router or Firewall to allow the inbound traffic from Intermedia’s Servers.
You will need to forward Port 6060 (UDP) to the phone system’s IP address in 10-12-09. This will be the signaling port.
Next, you will need to forward a range of ports for audio/voice.
Forward RTP/UDP ports 10020-10083 to the IP address in 84-26.
In addition, SIP ALG must be disabled on all involved network components (ISP Modems, Routers, Firewalls, etc.).
Program 10-67: SIP Stack Configuration Setup
Setting No: 01
Trunk Type: SIP
Start Port: This value should be the Port Number of the first available line port AFTER you account for all of your physical CO-Line Ports.
- Example: If your Phone System has (1) CO-Line Card. Then 3 Ports are dedicated to CO Lines, so your value would be “4”
- Example 2: If your Phone System has (2) CO-Line Cards. Then 6 Ports are dedicated to CO Lines, so your value would be “7”, Even if you are using only 4 of the 6 CO Ports, your value would still be “7”
Number of Ports: This value should be the number of SIP Trunks, and should match the number of SIP Trunk Licenses you have installed in the system.
Program 10-68: IP Trunk Availability
| 01 – DNS Mode | ON |
| 02 – DNS IP Port | 8.8.8.8 |
Program 10-03: VOIPDB Configuration
| Physical Port | Trunk Logical Port | Trunk Type |
| 01 | 1 | SIP |
| 02 | 2 | SIP |
| 03 | 3 | SIP |
| 04 | 4 | SIP |
Program 10-28: SIP System Information Setup
| 01 – Domain Name | com |
| 02 – Host Name | uc70.accessline |
| 03 – Transport Protocol | UDP |
| 05 – Domain Assignment | Domain Name |
Program 10-29: SIP Server Information Setup
| 01 – Outbound Default Proxy | Checked |
| 02 – Inbound Default Proxy | Unchecked |
| 03 – Default Proxy IP Address | (Emailed by Intermedia) |
| 04 – Default Proxy Port | 6060 |
| 05 – Register Mode | Manual |
| 06 – Registrar IP Address | (Emailed by Intermedia) |
| 07 – Registrar Port | 6060 |
| 08 – DNS Mode | Checked |
| 09 – DNS IP Address | 8.8.8.8* |
| 10 – DNS Port | 53 |
| 11 – Registrar Domain Name | uc70.accessline.com |
| 12 – Proxy Domain Name | com |
| 13 – Proxy Host Name | uc70.accessline |
| 14 – SIP Carrier Choice | Carrier N** |
| 15 – Registration Expiry Time | 3600 |
| 16 – Register Sub Mode | Unchecked |
| 17 – DNS Source Port | 53 |
| 20 – Authentication Trial | 1 |
| 21 – NAT Router | yes |
*Use any valid domain name server such as Google’s 8.8.8.8 address in field 09.
**We have seen this value be either C or N. Start with Carrier Choice C and test before changing it to N (this will require a system reboot).
Program 10-36: SIP Trunk Registration Information
| Registration ID | 00 |
| Registration | Checked |
| User ID | 3215551234 (main number) |
| Authentication User ID | The User Id that was Emailed |
| Authentication Password | The Password that was Emailed |
Program 20-08: Class of Service
| 13 – Set Calling Party Number | Checked |
Program 21-17: IP Trunk (SIP) Calling Party Number Setup for Trunks
| Trunk | Calling Party Number (main number) |
| 1 | 2221234567 |
| 2 | 2221234567 |
| 3 | 2221234567 |
| 4 | 2221234567 |
Program 84-13: SIP Trunk Codec Information Basic Setup
| 28 – Audio Capability Priority | G.729_PT |
| 30 – Auto Gain Control | 0 |
| 31 – DTMF Payload Number | 101 |
| 32 – DTMF Relay Mode | RFC2833 |
Program 22-02: Incoming Call Trunk Setup
| Trunk | Mode 1 | Mode 2 | Mode 3 | Mode 4 |
| 1 | DID | DID | DID | DID |
| 2 | DID | DID | DID | DID |
| 3 | DID | DID | DID | DID |
| 4 | DID | DID | DID | DID |
Program 20-11: DID Translation Table
| DID Translation Table Entry | Received Number | Target Number |
| 001 | 4194 | 105 |
Program 15-07: Function Keys
| Function Key | Function | Additional Data |
| 01 | *01 – Trunk Key | 1 |
| 02 | *01 – Trunk Key | 2 |
| 03 | *01 – Trunk Key | 3 |
| 04 | *01 – Trunk Key | 4 |