# Ericsson-LG iPECS

## How Voice Logica connects

The iPECS **registers SIP CO lines to Voice Logica** ([way 1](https://docs.voicelogica.ai/phone-systems/#the-four-ways-voice-logica-connects)). Voice Logica creates the trunk and gives you a server, a username and a password.

- Calls the iPECS sends out on the Voice Logica CO group are answered by the AI agent.
- The agent transfers callers back over the same lines with the extension number; **DID conversion** rings the extension.

## Before you start

- SIP trunk channels on the system (UCP: a VOIM module). Your iPECS dealer confirms the licence for your model.
- One CO line per simultaneous call. A Warm transfer uses two until it connects.

## 1. Create the connection in Voice Logica

**Telephony - Trunks - Connect your PBX**, pick **Ericsson-LG iPECS** and the agent. Keep the dialog open until it says **Connected**.

## 2. Program the SIP lines

1. **PGM 210** SIP Common: set a primary DNS, save and restart, so the server name resolves.
2. **PGM 133** SIP CO Attributes for the CO range used for Voice Logica: **Proxy Server Address** = the server, **Outbound Proxy** = ON, **Domain** = the server, **DTMF Type** = 2833, codec priority 1 = G711a (20 ms).
3. **PGM 126** SIP User ID: **Registration User ID** = the username, **Authentication User ID** = the username, **Password** = the password, mode **Register**, **Usage** = ON, **Ring route** = DID CONVERSION.
4. Link the CO range to that SIP User ID (PGM 133 **Registration UID**).

## 3. Send calls to the agent

Put the Voice Logica CO lines in their own CO group. Staff dial its access code; for a number, an attendant option or after-hours calls, forward that destination to the CO group.

## 4. Let the agent transfer back to extensions

**PGM 140** CO Type = DID, **PGM 145** DID Conversion = flexible table, **PGM 231** Flexible DID Conversion: map each number the agent sends (for example `201`) to the extension. Then, in Voice Logica, add each extension as a transfer destination (**External** with the number, or a **User** with that extension) and use **Warm** transfer.

## 5. Check it works

- The dialog says **Connected**.
- Dial the CO group code: the call appears in **Calls**.
- Ask the agent for a colleague: the extension rings.

## Good to know

- Turn off **SIP ALG** on the office router.
- If the dealer's carrier guide asks for port forwards, they are for a provider that does not keep the connection open. Voice Logica answers the PBX's registration, so try without forwards first.