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### Description

Kamailio's ims_usrloc_pcscf module fetches all contact informations from location table at startup. I noticed that it fails to fetch protocol information. I checked the function which reads the contact row:

https://github.com/kamailio/kamailio/blob/c3629f877500373028d2c7cdefd976cddd...

I saw that it is read the value as INT. Then checked database table and saw that protocol field is CHAR(5). https://github.com/kamailio/kamailio/blob/master/utils/kamctl/mysql/ims_usrl...

``` CREATE TABLE `location` ( ... `protocol` char(5) DEFAULT NULL, ... ); ```

The protocol fields needs to be INT in location table as well.

This bug leads to other bugs because protocol information is used in aor_hash calculation.

Best regards Erhan Sendag

### Troubleshooting

#### Reproduction

Put a record in location table with protocol value as 1. Set ims_usrloc_pcscf module parameter db_mode as 1. After kamailio startup, on debug log, protocol information will be seen as a big integer value.

#### Debugging Data

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``` (paste your debugging data here) ```

#### Log Messages

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#### SIP Traffic

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### Possible Solutions

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The protocol fields can be defined as INT in location table.

### Additional Information

* **Kamailio Version** - output of `kamailio -v`

``` (paste your output here) ```

* **Operating System**:

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``` (paste your output here) ```